Jasmine tea: the pale brewed drink and the dried leaves with jasmine flower buds.

Jasmine Tea

Q: What is jasmine tea?

Jasmine tea is usually green tea (from the tea plant Camellia sinensis) scented with flowers of Jasminum sambac. The tea gives caffeine and catechins, and the flowers give the smell. Some products may use another tea base or be flower-only infusions, so check the label.

Q: Does jasmine tea have caffeine?

Usually yes, from the tea leaf. No source read measured caffeine in jasmine tea itself. For green tea the FDA lists 37 mg per 12 fl oz, and one US lab found 14 to 61 mg per serving across white, green and black teas. The FDA says about 400 mg a day from all sources is not generally linked with harm in most adults.

Q: How is jasmine tea different from green tea?

Jasmine tea is green tea scented with flowers. The flowers add scent compounds such as linalool and methyl anthranilate. In one small smell test, jasmine tea odor lowered heart rate but the odor of green tea alone did not give the same effect. No study shows that the difference matters when you drink it.

Q: Does jasmine tea help you relax or sleep?

Only the smell has been tested. In 24 healthy volunteers, 5 minutes of smelling a low level of jasmine tea odor lowered heart rate and gave calmer mood scores. Drinking the tea, and sleep, were not tested. A strong odor raised alerting activity in people who disliked the smell. The tea also has caffeine, which can disturb sleep.

Q: Does jasmine tea lower blood pressure or cholesterol?

This has not been shown. No jasmine tea trial was found. An older rat study found jasmine tea extract lowered cholesterol. Green tea trials show about 1 mmHg lower blood pressure in one pooled analysis, a small cholesterol drop in another and no effect in a third.

Q: Does jasmine tea lower cancer risk?

No. A study in China of 600 esophageal and 914 stomach cancer cases found no link with ever drinking jasmine tea, and the authors saw no protective effect. Among men, more lifetime tea was linked with higher esophageal cancer risk. It cannot show cause, and heat was not measured.

Q: Is jasmine tea good for the heart or stroke?

Not shown. A survey of 14,212 adults in China linked tea drinking with fewer strokes. For jasmine tea alone the odds ratio was 0.75 and the range (0.51 to 1.11) includes no effect. A survey cannot show that tea is the cause.

Q: Does jasmine tea help with weight loss?

This has not been shown in people. Cold-brewed jasmine tea reduced weight gain in mice on a high-fat diet. No human study of jasmine tea for weight was found. In a study of 19,350 adults, tea drinking was not linked with fatty liver after adjustment.

Q: Is jasmine tea safe in pregnancy, breastfeeding or for children?

It contains caffeine, which counts toward your daily limit. The NHS says not more than 200 mg a day in pregnancy. NCCIH says caffeine passes into breast milk, and low-to-moderate intake usually has no effect on the baby. The FDA says to avoid caffeinated drinks for children younger than 2. No source read covers jasmine tea itself, so ask a clinician.

Q: Can jasmine tea hurt the liver, and what about extracts?

No liver injury linked to jasmine tea was found. Rare liver injury has been reported for green tea extracts, and EFSA found liver enzyme rises with high-dose catechin supplements. Jasmine tea extracts have not been assessed, so do not assume they are the same or different. Stop any extract and get care if you have yellow skin or eyes or dark urine.

Camellia sinensis scented with Jasminum sambac · also called Jasmine green tea, scented jasmine tea. Some products may use another tea base or be flower-only infusions; the label should say.

Jasmine tea is usually green tea scented with jasmine flowers. People drink it for its flowery smell, calm and general wellbeing. No trial of drinking jasmine tea for any health use was found, so the evidence is thin. The main known effect is caffeine from the tea leaves, and very hot drinks are a separate risk.

General information, not medical advice. Last substantive update October 25, 2026 · Not medically reviewed. A named clinician has not signed off on this page. How this page is made

About Jasmine Tea

Jasmine tea is usually green tea scented with jasmine flowers. Human research is thin: two tiny smell experiments and a few surveys in China. No trial of drinking it for any health outcome was found. Caffeine from the tea leaves is the main known concern, and very hot drinks are a separate risk. Extract capsules and flower-only products are different and are not judged by tea results.

What it is

Most jasmine tea is a scented tea. A food chemistry paper describes Chinese jasmine green tea scented with flowers of Jasminum sambac, which GBIF accepts as a species in the olive family (Oleaceae). The base is green tea, from the leaves of Camellia sinensis, the tea family plant (Theaceae) that GBIF also accepts as a species.

The flowers give the aroma. That paper found 66 odor compounds, and six of them rebuilt the tea's flavor in a test mixture. Linalool (floral) and methyl anthranilate (grape-like) were the key two. Nothing in the sources read says the flowers add caffeine or medicine-like effects. The caffeine and catechins, such as EGCG, come from the tea leaf.

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Tea, extract or flower infusion?

A cup of jasmine tea is a weak water extract of tea leaf and the scent of flowers. Flower-only jasmine infusions, jasmine essential oil and concentrated extracts are different products with different cautions. The human studies read used the drink, or only its smell. For green tea, EFSA found liver enzyme rises only with high-dose supplements, and no source read covers jasmine tea extracts. Do not carry results from one form to another.

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What the research shows

Two small experiments tested the smell of jasmine tea. In 24 healthy volunteers, 5 minutes of a low level of the odor lowered heart rate and gave calmer mood scores. In 8 volunteers, a strong odor raised alerting nerve activity in people who disliked it. The smell of green tea alone did not give the same effect. These tests did not involve drinking.

A study in China of 600 esophageal and 914 stomach cancer cases and 1,514 controls found no link with ever drinking jasmine tea and no protection. More lifetime tea in men was linked with higher esophageal cancer risk. A survey of 14,212 adults found a possible link with fewer strokes (odds ratio 0.75), but the range included no effect. A study of 19,350 adults found no link with fatty liver after adjustment.

Cholesterol and weight results come from animals: jasmine tea extract lowered cholesterol in rats, and cold-brewed jasmine tea reduced weight gain in mice. Pooled green tea trials give small or no changes in blood pressure and cholesterol, and they mix drinks and extracts.

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Metals, fluoride and what is in the leaf

Metals: a study of 25 Chinese teas that included jasmine tea measured dry leaf. Lead was 0.48 to 10.57 mg/kg with 80% of values under the Chinese guideline maximum. Copper met the standard in only 64% of values. The abstract does not give jasmine tea values separately, and dry leaf is not the brewed drink.

Fluoride: tea plants gather fluoride. In 12 brands of green, oolong, black and jasmine tea, fluoride rose as the quality grade fell, but no jasmine tea value is given in the abstract. A review of 88 studies gave averages of 1.37 mg/L for green tea and 2.73 for black tea. Longer brewing released more. Fluoride matters most for young children and very heavy tea drinkers.

No pesticide survey of jasmine tea was found, and no source read checks how real flower scenting compares with added flavouring. These are unknown.

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Regulators and status

No regulator page or herbal monograph for jasmine tea was read. NCCIH, the FDA and the NHS give caffeine and green tea guidance, EFSA has an opinion on green tea catechins, and the EMA has a monograph for green tea leaf. LiverTox was read only as a summary, and LactMed has a green tea record.

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At a glance

Traditional uses history, not proof

Ito 2002 describes Chinese jasmine green tea as green tea scented with flowers of Jasminum sambac.
In a study in China, 35% of male and 8% of female controls drank jasmine tea, and other tea was rare in that area (Gao 2009).
NCCIH says tea has been used for health purposes for about 3,000 years (this is about tea in general).

Studied for research

Calm and mood from the smell (not drinking), very low
Blood pressure, insufficient
Cholesterol and blood fats, insufficient
Esophageal and stomach cancer risk, against (no protection seen)
Stroke (survey), insufficient
Fatty liver (survey), insufficient
Weight gain (mouse study only), insufficient

Main compounds

Caffeine (from the tea leaf)
Catechins, including EGCG (from the tea leaf)
Linalool (floral scent)
Methyl anthranilate (grape-like scent)

Common forms

Loose leaf scented tea
Tea bags
Bottled and iced jasmine tea
Cold-brewed jasmine tea (studied in mice)
Flower-only jasmine infusions (a different product)
Extracts (different products, not covered by drink results)

Research links: NCCIH: Green Tea (there is no jasmine tea page) · FDA: How much caffeine is too much · NHS: Foods to avoid in pregnancy · EFSA opinion on green tea catechins (abstract) · Jasmine tea odor and mood study (abstract) · Jasmine tea and upper gastrointestinal cancer in China (abstract) · Research Library · Genes & Biomarkers Library

What it is and its history

Accepted scientific name: Jasminum sambac (flowers) with Camellia sinensis (tea base)
Naming authority: Jasminum sambac (L.) Aiton; Camellia sinensis (L.) Kuntze
Synonyms: Camellia bohea (L.) Sweet; Camellia chinensis (Sims) Kuntze; Camellia cantonensis Lour.
Common names: Jasmine tea (English); Jasmine green tea (English); Scented tea (English)
Family or group: Theaceae (tea family) for the leaf; Oleaceae (olive family) for the flower
Classification: Plantae > Ericales (tea base); Lamiales (jasmine flower) > Theaceae (tea base); Oleaceae (jasmine flower) > Camellia and Jasminum > Camellia sinensis and Jasminum sambac
Native range: Not checked.
Habitat: Not checked.
What it looks like: Roots: Not applicable (leaves and flowers are used).; Stems: Not checked.; Leaves: Tea leaves, usually green (not fermented) tea.; Flowers: Jasmine flowers give the scent; the flowers are not the source of the tea's caffeine.; Fruit: Not checked.
Cultivation: Not checked.
Harvest and processing: Ito 2002 describes Chinese jasmine green tea as green tea scented with Jasminum sambac flowers. How the flowers are used was not read in detail.
Look-alikes and adulterants: Name: Green tea; Note: The usual base of jasmine tea, without the flower scent.; Name: Pure jasmine flower infusion; Note: A flower-only product with no tea leaf. Its caffeine and safety are different and are not covered by tea results.; Name: Jasmine essential oil; Note: A concentrated product from the flower with its own skin and ingestion cautions. Not covered by tea results.
Sustainability and conservation: Not checked.

Photographs

A clear glass cup of pale golden-green jasmine tea beside a small pile of rolled dark green tea leaves with dried jasmine flower buds — Jasmine tea: the pale brewed drink and the dried leaves with jasmine flower buds.

Traditional use and history history, not clinical proof

Tradition or era	Documented use	Source
China	Ito 2002 calls its sample 'Chinese jasmine green tea scented with flowers of Jasminum sambac'. Gao 2009 found that 35% of male and 8% of female controls in its Chinese study area drank jasmine tea, and that other tea was rare there.	p12166975
Tea in general	NCCIH says the tea plant was first cultivated in China thousands of years ago and that tea has been used for health purposes for about 3,000 years (about tea in general, not jasmine tea).	s-nccih-green-tea
Modern regulation	The EMA has an EU herbal monograph for green tea leaf; no regulator page for jasmine tea was found.	s-ema-hmpc-green-tea

Traditional use shows how it was used. It does not show that it works or is safe today.

What is inside, and how it may work

What it contains and how those compounds act in cells and animals. Laboratory and animal mechanisms are not proven effects in people.

Main compounds

Compound	Family	Where it is concentrated	Activity studied	Level of evidence
Caffeine PubChem 2519	purine alkaloid	Tea leaf No value for jasmine tea itself was read. 14 to 61 mg per serving across white, green and black teas in one US lab; green tea 37 mg per 12 fl oz (FDA).	Stimulant; see the Safety tab. ^{28 2 24}	Human data
Epigallocatechin gallate (EGCG) PubChem 65064	catechin (polyphenol)	Tea leaf Not measured for jasmine tea in the abstracts read. The rat study found individual catechins higher in green and jasmine tea extracts than in more fermented teas.	Liver effects at high supplement doses (green tea, EFSA). ^{29 20 3}	Lab
Linalool PubChem 6549	monoterpene alcohol (scent compound)	Jasmine flower scent A potent floral odorant of jasmine tea; the (R)-(-) form was 81.6% excess in the tea and 100% in the flower in one study.	At the concentration found in the tea, (R)-(-)-linalool smell gave the same heart rate and mood results as jasmine tea odor in 24 volunteers; (S)-(+)-linalool did not. ^{30 9 11}	Human experiment (smell only)
Methyl anthranilate PubChem 8635	ester (scent compound)	Jasmine flower scent A grape-like odorant and, with (R)-(-)-linalool, one of the two key odorants of jasmine tea flavor.	Smell only; no health activity was tested. ^{31 9}	Lab

Mechanisms, receptors and pathways

Target or pathway	Gene or receptor	What was found	Level
Calming (parasympathetic) nerve activity from smell	n/a	Low-strength jasmine tea odor, and (R)-(-)-linalool at the same concentration, lowered heart rate and raised the high-frequency component of heart rate variability in healthy volunteers. A strong odor raised alerting activity in people who disliked it. ^{11 8}	Human experiment (smell only)
Cholesterol (rat)	n/a	Jasmine and green tea extracts lowered serum and liver cholesterol in rats on a cholesterol-rich diet. The authors point to catechins (EGCG and ECG). ²⁰	Animal research
Gut bacteria and fat-handling genes (mouse)	Leptin, Pgc1a, Il6, Il1b, Cyp7a1, Lxra, Srebp1c, Atgl (mRNA levels in mice)	Cold-brewed jasmine tea shifted gut bacteria and changed the activity of these genes in mice on a high-fat diet. ¹²	Animal research
Liver effects of concentrated catechins (green tea)	n/a	EFSA found that EGCG at 800 mg a day or more from supplements raised liver enzymes. This is about green tea supplements, not jasmine tea. ³	Human (green tea extract)

Absorption, metabolism and elimination

Absorption: Not covered in the sources read for jasmine tea.
Distribution: Not covered.
Metabolism: Not covered for jasmine tea.
Elimination: Not covered.
Bioavailability: Not covered.

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Isolated compounds versus whole extracts

A cup of jasmine tea, a bottled tea, a cold-brewed tea, a flower-only infusion and a concentrated green tea or jasmine extract are different products. The liver reports are about concentrated green tea extract, and the smell studies used the odor, not a drink. Results from one form should not be carried to another.

Nutritional composition

Jasmine tea is not a source of essential nutrients in the sources read. It contains caffeine and catechins from the tea leaf and scent compounds from the flower. Tea can lower iron absorption from a meal (other teas tested).

7benefits and uses looked at

33studies and sources checked

Very low certaintybest evidence rating found

8lab markers tracked in trials

1 very low certainty5 not enough evidence1 evidence against

What is Jasmine Tea good for?

The uses people ask about and how strong the human evidence is for each. No trial of drinking jasmine tea was found, so every rating here is very low, insufficient or against.

Calm and mood (from the smell, not drinking)Very low certaintyIn 24 healthy volunteers, 5 minutes of smelling a low level of jasmine tea odor lowered heart rate and gave calmer mood scores than a control odor. A smaller test of 8 people found a strong odor raised alerting nerve activity in people who disliked the smell. Drinking the tea was not tested. Blood pressureNot enough evidenceNo jasmine tea trial was found. Trials of the green tea base found a drop of about 1 mmHg in one pooled analysis and no significant effect in another. Cholesterol and blood fatsNot enough evidenceNo jasmine tea trial was found. An older rat study found jasmine tea extract lowered cholesterol. Green tea trials show a small drop in one pooled analysis and none in another. Esophageal and stomach cancer riskEvidence againstA study in China of 600 esophageal and 914 stomach cancer cases found no link with ever drinking jasmine tea, and no protection. Among men, more lifetime tea was linked with higher esophageal cancer risk. It cannot show cause. StrokeNot enough evidenceA survey of 14,212 adults in China linked tea drinking with fewer strokes. For jasmine tea alone the odds ratio was 0.75, and the range (0.51 to 1.11) includes no effect. Fatty liver diseaseNot enough evidenceIn 19,350 adults in Tianjin, no link was found between daily tea drinking, including jasmine tea, and newly found fatty liver after adjusting for other factors. Weight gain and gut bacteria (mouse study only)Not enough evidenceCold-brewed jasmine tea reduced weight gain and improved blood fat markers in mice on a high-fat diet. This is animal research and does not show the same in people.

Benefits, one by one

Each card is a research question, not a promise. Tap a goal to filter. Open a card to see the studies, doses and limits.

Calm and mood (from the smell, not drinking)

Very low certainty

In two small lab studies, smelling jasmine tea odor lowered heart rate and gave calmer mood scores. These tests used the smell only. No study tested whether drinking jasmine tea has the same effect.

3 studiesInhaled odor of jasmine tea, not a drink. Amount not given in the abs…

Studies, doses and limits

What the trials found

Kuroda 2005 tested 24 healthy volunteers. They smelled jasmine tea odor, at the lowest strength each person could detect, for 5 minutes. Jasmine tea and lavender odors both lowered heart rate and raised the high-frequency part of heart rate variability compared with a control odor (P < 0.05), and mood scores showed calm and vigorous states. Inoue 2003 tested 8 volunteers: a weak odor raised calming (parasympathetic) nerve activity in everyone, while a strong odor did so only in people who liked the smell and raised alerting (sympathetic) activity in people who disliked it. Green tea odor alone did not give the same effect.

Results

Lower heart rate and higher high-frequency heart rate variability after 5 minutes of low-strength jasmine tea odor (P < 0.05); calm mood scores. A strong odor in people who dislike it raised alerting nerve activity.

Effect sizes as reported

Not given as numbers in the abstracts.

Why this rating

Two very small experiments (24 and 8 people), healthy volunteers, short smell-only tests, no numbers in the abstracts, and no study of drinking the tea.

Form and dose studied

Inhaled odor of jasmine tea, not a drink. Amount not given in the abstracts.

Who was studied

Healthy volunteers.

Limits

Smell, not drinking. Very small. Short. People's liking for the smell changed the result. Calm in a lab for 5 minutes does not show help for anxiety or sleep.

Why researchers looked

Jasmine tea is valued for its floral smell, and scent compounds such as linalool are known to be calming in lab tests.

Traditional use

Not described in the sources read.

Proposed mechanism Human experiment

Linalool is the main scent compound of the tea. In one study the (R)-(-) form of linalool, at the concentration found in the tea, gave the same heart rate and mood results as the tea odor, while the (S)-(+) form did not. How the smell acts on the body was not tested in the abstract.

A proposed mechanism does not show that the effect happens in people.

Jasmine tea usually contains caffeine from the tea leaves. See the Safety tab for caffeine, pregnancy, iron, medicine and very hot drink cautions.

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Blood pressure

Not enough evidence

No trial of drinking jasmine tea for blood pressure was found. Trials of the green tea base give a very small and inconsistent picture, so no claim can be made for jasmine tea.

3 studiesGreen tea drinks and extracts mixed, not jasmine tea.

Studies, doses and limits

What the trials found

No human trial of jasmine tea for blood pressure was found. For the green tea base, a 2025 pooled analysis of 36 trials (Rezaei) found small average falls of 1.08 mmHg in the top number and 1.09 mmHg in the bottom number, with very large differences between studies. A 2020 pooled analysis of 14 trials of green or black tea lasting 4 to 24 weeks (Igho-Osagie, 798 people) found no significant effect on blood pressure. Neither separates jasmine tea.

Results

Jasmine tea: no trial. Green tea trials: systolic -1.08 mmHg (95% CI -1.98 to -0.18); diastolic -1.09 mmHg (-1.67 to -0.50) in one pooled analysis; no significant effect in another.

Effect sizes as reported

A drop of about 1 mmHg in one analysis, which is very small, and nothing in the other.

Why this rating

No jasmine tea trial. Green tea trials disagree, are small and differ a lot between studies.

Form and dose studied

Green tea drinks and extracts mixed, not jasmine tea.

Who was studied

Adults in trials of green tea or green and black tea.

Limits

Indirect evidence from the green tea base. The scent added to jasmine tea was not tested for blood pressure.

Why researchers looked

Tea drinking and green tea catechins are often said to help blood pressure, and jasmine tea is usually made on a green tea base.

Traditional use

Not described in the sources read.

Proposed mechanism Not established

No mechanism was established in the sources read.

A proposed mechanism does not show that the effect happens in people.

Jasmine tea usually contains caffeine from the tea leaves. See the Safety tab for caffeine, pregnancy, iron, medicine and very hot drink cautions. The FDA lists high blood pressure among signs of too much caffeine.

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Cholesterol and blood fats

Not enough evidence

No trial of drinking jasmine tea for cholesterol was found. One older rat study found jasmine tea extract lowered cholesterol. Human trials of green tea show at most a small drop, and one pooled analysis found none.

4 studiesRats: jasmine tea extract. Humans: green tea drinks and extracts, not…

Studies, doses and limits

What the trials found

No human trial of jasmine tea for cholesterol was found. Green tea: a 2011 pooled analysis of 14 trials (Zheng, 1,136 people, drinks and extracts mixed) found total cholesterol 7.20 mg/dL lower and LDL 2.19 mg/dL lower, with no change in HDL. A 2020 pooled analysis of 14 trials of green or black tea (Igho-Osagie) found no significant effect on cholesterol or triglycerides. NCCIH says most green tea cholesterol trials used extract supplements, not the drink.

Results

Jasmine tea: rat study only (lower serum and liver cholesterol; HDL and triglycerides not significantly changed). Green tea trials: total cholesterol -7.20 mg/dL (95% CI -8.19 to -6.21), LDL -2.19 mg/dL (-3.16 to -1.21) in one analysis; no significant effect in another.

Effect sizes as reported

Small at most in green tea trials; no human size for jasmine tea.

Why this rating

No jasmine tea trial. The only jasmine tea data are from rats, and the green tea trials mix drinks and extracts and disagree.

Form and dose studied

Rats: jasmine tea extract. Humans: green tea drinks and extracts, not jasmine tea.

Who was studied

Rats on a cholesterol-rich diet; adults in green tea trials.

Limits

Animal data and indirect evidence only. Cholesterol numbers are lab markers, not heart attacks or strokes.

Why researchers looked

Green tea catechins are thought to affect fat handling, and jasmine tea has a green tea base with similar catechins.

Traditional use

Not described in the sources read.

Proposed mechanism Hypothesis

The rat study authors suggest EGCG and ECG catechins in the least fermented teas (green and jasmine) may explain the cholesterol effect. This was not tested in people.

A proposed mechanism does not show that the effect happens in people.

Jasmine tea usually contains caffeine from the tea leaves. See the Safety tab for caffeine, pregnancy, iron, medicine and very hot drink cautions.

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Esophageal and stomach cancer risk

Evidence against

A large study in China found that drinking jasmine tea was not linked with lower risk of esophageal or stomach cancer. Among men, more lifetime tea was linked with higher esophageal cancer risk. The study could not show cause.

2 studiesJasmine tea as drunk in China, ever versus never and lifetime amount.

Studies, doses and limits

What the trials found

Gao 2009 compared 600 people with esophageal squamous cell cancer, 598 with gastric cardia cancer and 316 with other stomach cancer to 1,514 matched controls. Ever versus never drinking jasmine tea was not linked with esophageal cancer (odds ratio 1.15, 95% CI 0.92 to 1.44), gastric cardia cancer (1.14, 0.88 to 1.37) or other stomach cancer (0.85, 0.64 to 1.15). In men, lifetime amount showed a significant positive dose-response with esophageal cancer, but not with the stomach cancers. The authors found no evidence of a protective effect.

Results

No link for ever versus never (OR 1.15, 0.85 and 1.14); higher esophageal cancer risk with more lifetime tea in men.

Effect sizes as reported

Odds ratios close to 1; a dose-response link in men for esophageal cancer.

Why this rating

One large observational study found no protection and a signal of higher risk in men. It cannot show cause, and tea temperature was not part of the abstract.

Form and dose studied

Jasmine tea as drunk in China, ever versus never and lifetime amount.

Who was studied

Adults in China, cases and matched controls.

Limits

Observational and self-reported. Heat, quality and water may explain the finding. One population.

Why researchers looked

Green tea is often said to protect against cancer, and jasmine tea is widely drunk in parts of China, so it was checked directly.

Traditional use

Gao 2009 reports that among controls 35% of men and 8% of women drank jasmine tea, and other tea was rare.

Proposed mechanism Hypothesis

The authors suggest studying heat damage, tea quality and water quality. IARC says it is the temperature, not the drink, that appears responsible for the cancer risk of very hot drinks.

A proposed mechanism does not show that the effect happens in people.

Very hot drinks are a separate risk, see the Safety tab. Jasmine tea usually contains caffeine from the tea leaves. See the Safety tab for caffeine, pregnancy, iron, medicine and very hot drink cautions.

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Stroke

Not enough evidence

A Chinese survey of 14,212 adults found that tea drinkers had fewer strokes. For jasmine tea alone the link was not statistically clear. A survey cannot show that tea is the cause.

1 studiesSelf-reported jasmine tea drinking.

Studies, doses and limits

What the trials found

Chen 2004 surveyed 14,212 adults aged 35 to 60 in 12 provinces of China. After adjusting for other stroke risk factors, any tea drinking had an odds ratio of 0.60 (95% CI 0.42 to 0.85) for stroke. For green tea it was 0.35 (0.18 to 0.72). For jasmine tea it was 0.75 (0.51 to 1.11), which was not statistically significant.

Results

Jasmine tea OR 0.75 (0.51 to 1.11), not significant; green tea OR 0.35 (0.18 to 0.72); any tea OR 0.60 (0.42 to 0.85).

Effect sizes as reported

A possible 25% lower odds for jasmine tea, but the range includes no effect.

Why this rating

A single cross-sectional survey, the jasmine tea result was not statistically clear, and the survey cannot show cause.

Form and dose studied

Self-reported jasmine tea drinking.

Who was studied

Adults aged 35 to 60 in China.

Limits

Cross-sectional: a past stroke may have changed tea habits. Other differences between drinkers and non-drinkers may explain it. Abstract of a Chinese-language article only.

Why researchers looked

Tea drinking is often linked with heart and brain blood vessel health in population surveys.

Traditional use

Not described in the sources read.

Proposed mechanism Not established

No mechanism was established in the sources read.

A proposed mechanism does not show that the effect happens in people.

Jasmine tea usually contains caffeine from the tea leaves. See the Safety tab for caffeine, pregnancy, iron, medicine and very hot drink cautions.

Fatty liver disease

Not enough evidence

A study of 19,350 adults in Tianjin found no link between daily tea drinking, including jasmine tea, and newly found fatty liver after the authors accounted for other factors.

1 studiesDaily tea drinking from a food questionnaire.

Studies, doses and limits

What the trials found

Xia 2019 studied 19,350 adults. Before adjustment, drinking at least 1 cup a day of jasmine tea had an odds ratio of 1.36 (95% CI 1.20 to 1.54) for newly diagnosed fatty liver (green tea 1.48, oolong 1.50, black 1.28). After adjusting for social, behavior, body size, diet and clinical factors, no significant link was found between tea drinking and fatty liver disease.

Results

No significant link after adjustment. Before adjustment, jasmine tea 1.36 (1.20 to 1.54).

Effect sizes as reported

None after adjustment.

Why this rating

A single cross-sectional study with a null result after adjustment; the adjusted jasmine tea value is not given separately in the abstract.

Form and dose studied

Daily tea drinking from a food questionnaire.

Who was studied

Adults in Tianjin, China.

Limits

Cross-sectional and self-reported; cannot show cause.

Why researchers looked

Tea extract supplements have been studied for fatty liver risk factors, but daily tea drinking in the general population had not been checked.

Traditional use

Not described in the sources read.

Proposed mechanism Not established

No mechanism was established in the sources read.

A proposed mechanism does not show that the effect happens in people.

Liver injury linked to tea products involves concentrated green tea extracts, not the drink (see the Safety tab).

¹⁹

Weight gain and gut bacteria (mouse study only)

Not enough evidence

In mice fed a high-fat diet, cold-brewed jasmine tea reduced weight gain and improved blood fat markers. This is animal research and does not show the same in people.

1 studiesCold-brewed jasmine tea fed to mice; amount not given in the abstract.

Studies, doses and limits

What the trials found

No human study of jasmine tea for weight was found.

Results

Mice on a high-fat diet gained less weight, had better blood fat markers, less fat deposit, less liver injury and less inflammation with cold-brewed jasmine tea (Li 2022). The abstract gives no numbers.

Effect sizes as reported

Not given.

Why this rating

Mouse study only. No human data.

Form and dose studied

Cold-brewed jasmine tea fed to mice; amount not given in the abstract.

Who was studied

Mice.

Limits

Animal results often do not carry over to people. This is not a brewing recommendation.

Why researchers looked

Cold-brewed jasmine tea is sold as a functional drink, and researchers tested whether it protects against diet-induced obesity.

Traditional use

Not described in the sources read.

Proposed mechanism Animal research

In mice, cold-brewed jasmine tea changed gut bacteria and the activity of fat-handling genes in fat tissue and liver. Not tested in people.

A proposed mechanism does not show that the effect happens in people.

Jasmine tea usually contains caffeine from the tea leaves. See the Safety tab for caffeine, pregnancy, iron, medicine and very hot drink cautions.

¹²

Connections to the rest of health

How Jasmine Tea connects to the rest of our health knowledge graph. Every link says what kind of connection it is. A safety link (for example to the liver) is a warning, not a benefit. A study that merely mentions a topic never creates a benefit link.

Explore every connection: goals, body systems, organs, symptoms, genes

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A. Wellness goals

Connected to	Kind of connection	Evidence status	Context	Studies
Calm Relaxation		Very low certainty	Calm and mood (from the smell, not drinking): In two small lab studies, smelling jasmine tea odor lowered heart rate and gave calmer mood scores. These tests used the smell only. No study tested whether drinking jasmine tea has the same effect.	^{11 8 9}
Stress Reduction		Very low certainty	Calm and mood (from the smell, not drinking): In two small lab studies, smelling jasmine tea odor lowered heart rate and gave calmer mood scores. These tests used the smell only. No study tested whether drinking jasmine tea has the same effect.	^{11 8 9}
Heart Health		Not enough evidence	Blood pressure: No trial of drinking jasmine tea for blood pressure was found. Trials of the green tea base give a very small and inconsistent picture, so no claim can be made for jasmine tea.	^{17 7 24}
Blood Pressure Support		Not enough evidence	Blood pressure: No trial of drinking jasmine tea for blood pressure was found. Trials of the green tea base give a very small and inconsistent picture, so no claim can be made for jasmine tea.	^{17 7 24}
Cholesterol Balance		Not enough evidence	Cholesterol and blood fats: No trial of drinking jasmine tea for cholesterol was found. One older rat study found jasmine tea extract lowered cholesterol. Human trials of green tea show at most a small drop, and one pooled analysis found none.	^{20 21 7 25}
Heart Health		Not enough evidence	Cholesterol and blood fats: No trial of drinking jasmine tea for cholesterol was found. One older rat study found jasmine tea extract lowered cholesterol. Human trials of green tea show at most a small drop, and one pooled analysis found none.	^{20 21 7 25}
Preventive Wellness		Evidence against	Esophageal and stomach cancer risk: A large study in China found that drinking jasmine tea was not linked with lower risk of esophageal or stomach cancer. Among men, more lifetime tea was linked with higher esophageal cancer risk. The study could not show cause.	^{4 23}
Heart Health	Biological association	Not enough evidence	Stroke: A Chinese survey of 14,212 adults found that tea drinkers had fewer strokes. For jasmine tea alone the link was not statistically clear. A survey cannot show that tea is the cause.	¹
Metabolic Health		Not enough evidence	Fatty liver disease: A study of 19,350 adults in Tianjin found no link between daily tea drinking, including jasmine tea, and newly found fatty liver after the authors accounted for other factors.	¹⁹
Weight Management		Not enough evidence	Weight gain and gut bacteria (mouse study only): In mice fed a high-fat diet, cold-brewed jasmine tea reduced weight gain and improved blood fat markers. This is animal research and does not show the same in people.	¹²

B. Body systems

Connected to	Kind of connection	Evidence status	Context	Studies
Stress Mood	Biological association	Very low certainty	Studied for: Calm and mood (from the smell, not drinking)	^{11 8 9}
Cardiovascular System	Biological association	Not enough evidence	Studied for: Blood pressure Studied for: Cholesterol and blood fats	^{17 7 24 20 21 25 1}
Digestive System	Biological association	Evidence against	Studied for: Esophageal and stomach cancer risk	^{4 23}
Metabolism Weight	Biological association	Not enough evidence	Studied for: Fatty liver disease Studied for: Weight gain and gut bacteria (mouse study only)	^{19 12}

E. Health conditions

Connected to	Kind of connection	Evidence status	Context	Studies
Pregnancy	Contraindication	Low certainty	Counts toward the caffeine limit. Preparation or compound: Jasmine tea (caffeine)	²⁶
Esophageal cancer	Adverse effect or risk	Low certainty	IARC links very hot drinks, and a Chinese study of jasmine tea saw higher risk with more lifetime tea in men. Preparation or compound: Very hot tea drinking	^{23 4}
Iron-deficiency anemia	Adverse effect or risk	Low certainty	Tea polyphenols lowered iron absorption in a study of other teas. Preparation or compound: Tea drinks (jasmine tea not tested)	⁶

I. Biomarkers

Connected to	Kind of connection	Evidence status	Context	Studies
Heart rate and heart rate variability	Biological association	Very low certainty	Measured in trials: lowered (heart rate). A lab change is not the same as a health benefit.	^{11 8}
Mood scores (POMS test)	Biological association	Very low certainty	Measured in trials: improved (calmer). A lab change is not the same as a health benefit.	¹¹
Blood pressure	Biological association	Not enough evidence	Measured in trials: mixed. A lab change is not the same as a health benefit.	^{17 7}
LDL cholesterol	Biological association	Not enough evidence	Measured in trials: mixed. A lab change is not the same as a health benefit.	^{21 7 20}
Esophageal squamous cell cancer risk	Biological association	Evidence against	Measured in trials: no clear change (higher with more lifetime tea in men). A lab change is not the same as a health benefit.	⁴
Stroke (past stroke in a survey)	Biological association	Not enough evidence	Measured in trials: no clear change. A lab change is not the same as a health benefit.	¹
Fatty liver on ultrasound	Biological association	Not enough evidence	Measured in trials: no clear change. A lab change is not the same as a health benefit.	¹⁹
Body weight gain (mice)	Biological association	Not enough evidence	Measured in trials: lowered (in mice). A lab change is not the same as a health benefit.	¹²

J. Genes, receptors and enzymes

Connected to	Kind of connection	Evidence status	Context	Studies
Leptin, Il6, Il1b, Cyp7a1, Lxra, Srebp1c, Atgl	Preliminary mechanism	Animal	Gene activity changed by cold-brewed jasmine tea in mice on a high-fat diet; no human evidence.	¹²

L. Active compounds

Connected to	Kind of connection	Evidence status	Context	Studies
Caffeine	Adverse effect or risk	Moderate certainty	Counts toward daily caffeine; no value for jasmine tea itself was found. Preparation or compound: Jasmine tea (tea-plant base)	^{24 2}
Caffeine	Biological association	Human	Stimulant; see the Safety tab. Preparation or compound: Tea leaf	^{28 2 24}
Epigallocatechin gallate (EGCG)	Biological association	Lab	Liver effects at high supplement doses (green tea, EFSA). Preparation or compound: Tea leaf	^{29 20 3}
Linalool	Biological association	Human experiment (smell only)	At the concentration found in the tea, (R)-(-)-linalool smell gave the same heart rate and mood results as jasmine tea odor in 24 volunteers; (S)-(+)-linalool did not. Preparation or compound: Jasmine flower scent	^{30 9 11}
Methyl anthranilate	Biological association	Lab	Smell only; no health activity was tested. Preparation or compound: Jasmine flower scent	^{31 9}

Each connection is stored with the ingredient, the connected record, the kind of connection, the evidence status, the supporting studies, the preparation or compound involved, and a review date (last reviewed October 25, 2026).

Evidence at a glance: what changed in 2 lab markers

Tap a number to show only those markers. Counts are markers, not people.

Metabolic1 Other1

The evidence

The research centre for Jasmine Tea. Every record here was checked against PubMed or the publisher's page; we never list a study we have not verified.

Evidence by outcome

Calm and mood (from the smell, not drinking) 3 studies Very low certainty Blood pressure 3 studies Not enough evidence Cholesterol and blood fats 4 studies Not enough evidence Esophageal and stomach cancer risk 2 studies Evidence against Stroke 1 studies Not enough evidence Fatty liver disease 1 studies Not enough evidence Weight gain and gut bacteria (mouse study only) 1 studies Not enough evidence

Bars show how many studies we found for each outcome, not how well it works. People are added up across trials only (reviews are not added, to avoid double counting).

How we rate evidence

High certainty

Several well-run trials or reviews agree; further research is unlikely to change the picture much.

Moderate certainty

Good trials point the same way, but some doubt remains.

Low certainty

Small, short or inconsistent trials. The finding could change with better research.

Very low certainty

Very little or very weak human data. Treat as a possibility only.

Mixed findings

Trials or reviews disagree with each other.

Not enough evidence

Not enough human research to say either way.

Evidence against

Good research found no benefit, or found harm.

We take the reviewers' own risk-of-bias and GRADE statements where they exist, and otherwise judge from study size, design, consistency, directness and whether a product matches what is sold. Many publications do not make evidence high. Method note: We searched PubMed for jasmine tea research and read the abstracts of the jasmine tea papers. Green tea records used as background were checked against their PubMed summaries and key numbers re-read. We read the NCCIH, FDA, NHS, EMA and IARC pages, checked both plant names in GBIF and four compounds in PubChem. Only abstracts were read for papers, and one survey abstract is from a Chinese-language article. Certainty ratings are the compiler's own reading. Funding was not stated for most abstracts, so industry links are not ruled out. No study is cited that we could not verify.

Study library: every study we checked 33

Design Research type Year from Search

Study	Design	People	Product, dose, length	Result
Chen 2004 A study on the association between tea consumption and stroke [Chinese-language article, English abstract read] Zhonghua Liu Xing Bing Xue Za Zhi · PMID 15555387	Cross sectional	14212 14,212 adults aged 35 to 60 from 12 provinces of China	Self-reported tea drinking (any tea, green tea, black tea and other tea, jasmine tea) n/a Self-reported amount per month Habitual · vs People who did not drink tea	After adjusting for other stroke risk factors, tea drinkers had lower odds of stroke: odds ratio 0.60 (95% CI 0.42 to 0.85). More than 150 g of tea a month: 0.56 (0.36 to 0.89). By type: green tea 0.35 (0.18 to 0.72); black tea and other tea 0.24 (0.06 to 1.01); jasmine tea 0.75 (0.51 to 1.11), which was not statistically significant (P > 0.05). Jasmine tea: no clear link with stroke in this survey; green tea showed a stronger link (Jasmine tea OR 0.75 (0.51 to 1.11)) Methods, limits and funding Outcomes: Stroke (a past stroke, counted at one point in time) Limitations: Cross-sectional, so it cannot show cause or direction. Abstract only; tea was self-reported; other differences between tea drinkers and non-drinkers may explain the result. Funding and conflicts: Not stated in the abstract Read: abstract
Chin 2008 Caffeine content of brewed teas Journal of Analytical Toxicology · PMID 19007524 · DOI	Lab analysis lab	20 20 commercial tea products	Brewed white, green and black teas, decaffeinated teas and herbal teas n/a n/a n/a · vs Different serving sizes and steep times	White, green and black teas contained 14 to 61 mg of caffeine per serving (6 or 8 oz), with no trend by tea variety. Steep time changed the caffeine level. Decaffeinated teas had under 12 mg. No caffeine was found in herbal teas. Most brewed teas had less caffeine per serving than brewed coffee. 14 to 61 mg per serving across white, green and black teas Methods, limits and funding Outcomes: Caffeine in brewed tea Limitations: Lab study of 20 products; white tea is not reported on its own in the abstract; results are for the products and brewing used. Funding and conflicts: Not stated in the abstract Read: abstract
EFSA Panel on Food Additives and Nutrient Sources added to Food (ANS) 2018 Scientific opinion on the safety of green tea catechins EFSA Journal · PMID 32625874 · DOI	Regulatory opinion	Review of published studies, authority reports and submitted data	Green tea infusions, reconstituted drinks and food supplements containing catechins leaf (drink) and extract Mean EGCG intake from infusions in the EU 90 to 300 mg/day (up to 866 mg/day for high-level drinkers); supplements 5 to 1,000 mg/day Not applicable · vs Not applicable	Catechins from traditionally prepared green tea infusions, and reconstituted drinks of the same composition, are in general considered safe at the intakes reported in EU countries. Rare cases of liver injury have been reported after infusions, most probably an idiosyncratic (individual) reaction. Clinical trials show that EGCG at or above 800 mg a day taken as a food supplement raised liver enzymes (serum transaminases) compared with control. Drink generally safe at usual intakes; high-dose supplements raise liver enzymes Methods, limits and funding Outcomes: Liver safety of catechins (EGCG) Limitations: Abstract only was read; the full opinion could not be opened Funding and conflicts: Regulator opinion Read: abstract
Gao 2009 Jasmine tea consumption and upper gastrointestinal cancer in China Cancer Causes & Control · PMID 19597950 · DOI	Case control	3028 600 esophageal squamous cell cancer, 598 gastric cardia cancer and 316 other stomach cancer cases, with 1,514 matched controls, in China (n = total of cases and controls)	Jasmine tea drinking reported in an interview (ever versus never, and lifetime amount) n/a Self-reported Lifetime · vs Never drinkers	Among controls, 35% of men and 8% of women drank jasmine tea. Ever versus never drinking was not linked with esophageal cancer (odds ratio 1.15, 95% CI 0.92 to 1.44), gastric cardia cancer (1.14, 0.88 to 1.37) or other stomach cancer (0.85, 0.64 to 1.15) in men and women combined. Among men, lifetime amount showed a significant positive dose-response with esophageal cancer risk, but not with the stomach cancers. Consumption in men was linked with higher esophageal risk only in non-office workers. The authors found no evidence of a protective effect and suggested studying heat damage, tea quality and water quality. No protection found; a higher esophageal cancer risk with more lifetime tea in men (ESCC OR 1.15 (0.92 to 1.44); GCA 1.14 (0.88 to 1.37); GNCA 0.85 (0.64 to 1.15)) Methods, limits and funding Outcomes: Risk of upper gastrointestinal cancers Limitations: Observational, so it cannot show cause. Tea temperature was not measured in the abstract, so the signal may come from heat rather than the tea. Self-reported tea use. Funding and conflicts: US National Institutes of Health intramural research; the authors declare no conflict of interest Read: abstract
Hu 2018 The safety of green tea and green tea extract consumption in adults - Results of a systematic review Regulatory Toxicology and Pharmacology · PMID 29580974 · DOI	Systematic review	Toxicology studies and adverse-event data from 159 human intervention studies	Brewed green tea, green tea in drinks or food, and concentrated catechin-rich preparations leaf (drink) and extract Not applicable Not applicable · vs Not applicable	Liver was the target organ. Liver adverse events in humans came from a limited range of concentrated, catechin-rich preparations taken as large single doses, and not from brewed tea or extracts used in drinks or food. The authors derived a safe intake level for adults for solid single-dose preparations and a separate, higher observed safe level for beverage forms (the numbers are in the paper). Liver effects tied to concentrated bolus-dose preparations, not brewed tea Methods, limits and funding Outcomes: Liver adverse events Limitations: Abstract only was read; the abstract does not state who funded the review Funding and conflicts: Funding and conflict-of-interest statement not read Read: abstract
Hurrell 1999 Inhibition of non-haem iron absorption in man by polyphenolic-containing beverages British Journal of Nutrition · PMID 10999016	Controlled trial	Adult volunteers given a bread meal with radio-labelled iron	Black tea, herb teas (chamomile, vervain, lime flower, pennyroyal, peppermint), coffee and cocoa leaf (drink) Test beverages with different polyphenol amounts Single meals · vs Water control meal	All the beverages reduced iron absorption in a way that depended on their polyphenol content. Black tea cut absorption by 79 to 94 percent, peppermint tea 84, pennyroyal 73, cocoa 71, vervain 59, lime flower 52 and camomile 47 percent. Milk made little difference. Green tea was NOT tested. Large drop in iron absorption from a meal Methods, limits and funding Outcomes: Iron absorption from the meal Limitations: Green tea not tested; single meals in adults; applying this to green tea is an inference Funding and conflicts: Non-US government support listed in PubMed record Read: abstract
Igho-Osagie 2020 Short-Term Tea Consumption Is Not Associated with a Reduction in Blood Lipids or Pressure: A Systematic Review and Meta-Analysis of Randomized Controlled Trials Journal of Nutrition · PMID 33188386 · DOI	Meta-analysis	798 14 randomised trials in healthy adults and at-risk adults (obesity, prediabetes, borderline high cholesterol, metabolic syndrome)	Green tea or black tea leaf (drink) Differed 4 to 24 weeks (mean 7.4) · vs Placebo or control	No significant effect of tea on systolic or diastolic blood pressure, total, LDL or HDL cholesterol or triglycerides. Strength of evidence was low to moderate because the studies were small and underpowered. No significant effect in short trials (No significant effects (intervals not given in the abstract)) Methods, limits and funding Outcomes: Blood pressure, total, LDL and HDL cholesterol, triglycerides Limitations: Small trials, short duration, green and black tea pooled; absence of effect is not proof of no effect Funding and conflicts: Non-US government support listed in PubMed record Read: abstract
Inoue 2003 Autonomic nervous responses according to preference for the odor of jasmine tea Bioscience, Biotechnology, and Biochemistry · PMID 12843644 · DOI	Controlled human experiment	8 8 volunteers split into two groups by whether they liked or disliked the jasmine tea odor	Jasmine tea odor at low and high intensity (low = high-intensity tea diluted 20-fold), and the odor of Chinese green tea n/a (odor only, not a drink) Low and high intensity Short exposure (length not in the abstract) · vs Green tea odor	The low-intensity odor raised parasympathetic (calming) nerve activity in both groups. The high-intensity odor raised it in people who liked the smell, but raised sympathetic (alerting) activity in people who disliked it. The odor of Chinese green tea, the base of jasmine tea, did not give effects like the jasmine tea odor. Response depended on liking the smell and on its strength Methods, limits and funding Outcomes: Heart rate variability (parasympathetic and sympathetic nerve activity) Limitations: Only 8 volunteers; odor, not drinking; no numbers in the abstract. Funding and conflicts: Not stated in the abstract Read: abstract
Ito 2002 Identification of potent odorants in Chinese jasmine green tea scented with flowers of Jasminum sambac Journal of Agricultural and Food Chemistry · PMID 12166975 · DOI	Lab analysis lab	One Chinese jasmine green tea scented with Jasminum sambac flowers	Brewed jasmine green tea (volatile odor compounds separated from the drink) leaf and flower scent n/a n/a · vs Model mixture of six odorants	66 compounds were identified. Linalool (floral), methyl anthranilate (grape-like), 4-hexanolide (sweet), 4-nonanolide (sweet), (E)-2-hexenyl hexanoate (green) and 4-hydroxy-2,5-dimethyl-3(2H)-furanone (sweet) were the potent odorants. The (R)-(-) form of linalool made up 81.6% excess in the tea and 100% in the Jasminum sambac flower. A mixture of these six compounds closely copied the tea flavor. Methyl anthranilate and (R)-(-)-linalool were the key odorants. Six odor compounds explain the flavor of jasmine tea Methods, limits and funding Outcomes: Which compounds give jasmine tea its smell Limitations: Smell chemistry of one tea; says nothing about health effects or safety. Funding and conflicts: Not stated in the abstract Read: abstract
Jayasingha 2025 Fluoride in tea: accumulation, dietary exposure, and future strategies for risk mitigation in food safety; a scoping review Critical Reviews in Food Science and Nutrition · PMID 40504749 · DOI	Scoping review lab/food analysis	88 studies worldwide on fluoride in tea	Tea (all types) leaf (drink) Not applicable Not applicable · vs Not applicable	Tea plants take up fluoride from soil. Longer brewing released more fluoride. Average levels by type were brick tea 4.78 mg/L, black tea 2.73, green tea 1.37, white tea 0.49 and herbal tea 0.17. The review says black tea poses risks for children and for adults in high-intake regions; excessive intake may cause tooth and bone fluorosis and kidney disease. Green tea has less fluoride than black or brick tea but more than white or herbal tea Methods, limits and funding Outcomes: Fluoride in brewed tea Limitations: Scoping review; averages mix many countries; local water also adds fluoride Funding and conflicts: Not stated Read: abstract
Kuroda 2005 Sedative effects of the jasmine tea odor and (R)-(-)-linalool, one of its major odor components, on autonomic nerve activity and mood states European Journal of Applied Physiology · PMID 15976995 · DOI	Controlled human experiment	24 24 healthy volunteers	Smelling the odor of jasmine tea (lowest concentration each person could detect), compared with lavender odor, a control odor, and the scent compound linalool n/a (odor only, not a drink) Lowest detectable concentration 5 minutes of inhaling · vs Control odor	Jasmine tea odor and lavender odor, at similar perceived strength, lowered heart rate and raised the high-frequency component of heart rate variability compared with the control (P < 0.05). The mood test showed calm and vigorous mood states. (R)-(-)-linalool, at the same concentration as in the tea, gave the same results; (S)-(+)-linalool did not. The authors concluded that a low-intensity jasmine tea odor has sedative effects on autonomic nerve activity and mood. Lower heart rate and calmer mood scores after 5 minutes of smelling the odor (P < 0.05 for heart rate and the high-frequency component (no intervals in the abstract)) Methods, limits and funding Outcomes: Heart rate, heart rate variability (R-R intervals) and mood scores (POMS test) Limitations: Healthy volunteers only; odor, not drinking; very short test; the abstract does not say how the 24 people were split between tests or how large the changes were. Funding and conflicts: Not stated in the abstract Read: abstract
Li 2022 Cold-Brewed Jasmine Tea Attenuates High-Fat Diet-Induced Obesity and Gut Microbial Dysbiosis Nutrients · PMID 36558518 · DOI	Animal study mouse	Mice fed a high-fat diet	Cold-brewed jasmine tea tea Not given in the abstract Not given in the abstract · vs High-fat diet without tea and a control diet	Cold-brewed jasmine tea significantly reduced weight gain from the high-fat diet, abnormal blood fat levels, fat deposits, liver injury, inflammation and gut endotoxin leakage in mice. It shifted gut bacteria toward the pattern of the control group and changed the activity of fat-handling genes in fat tissue and liver. The authors say it might be a functional tea to prevent obesity and gut bacteria imbalance. Less weight gain and better blood fat markers in mice Methods, limits and funding Outcomes: Body weight, blood fats, liver, inflammation, gut bacteria, gene activity Limitations: Mice, not people. The abstract gives no numbers or tea amount. Results in mice often do not carry over. Funding and conflicts: The authors declare no conflict of interest Read: abstract
Lu 2004 Fluoride content in tea and its relationship with tea quality Journal of Agricultural and Food Chemistry · PMID 15237954 · DOI	Lab analysis lab	12 Fresh leaves from 14 plantations in China, and 12 brands of green, oolong, black and jasmine tea from six provinces	Tea leaves and tea products leaf n/a n/a · vs Quality grades	Tea plants gather fluoride. Fluoride rose with leaf maturity. In the 12 tea brands (green, oolong, black and jasmine tea), fluoride rose as quality fell and correlated well with the quality grade. The authors suggest fluoride could serve as a quality indicator. No jasmine tea value is given in the abstract. Lower-grade tea had more fluoride; no jasmine tea number in the abstract Methods, limits and funding Outcomes: Fluoride in tea leaves and products Limitations: 12 brands only; abstract gives no jasmine tea value. Funding and conflicts: Not stated in the abstract Read: abstract
NICHD / 2006 Drugs and Lactation Database (LactMed): Green Tea LactMed (NCBI Bookshelf) · PMID 30000907	Database record	n/a	Green tea leaves and stems leaf and stem n/a n/a · vs n/a	Green tea leaves and stems contain caffeine, L-theanine, polyphenols and tannins. Fussiness, jitteriness and poor sleep have been reported in infants of mothers with extremely high caffeine intakes. Giving tea directly to infants can interfere with iron absorption and cause anemia, but anemia in breastfed infants has not been reported with maternal tea intake. Passage of L-theanine into breastmilk has not been studied. No studies of oral green tea extract in breastfeeding were found. No clear harm from usual maternal tea intake; caution at very high caffeine Methods, limits and funding Outcomes: Breastfeeding safety Limitations: Summary record; no new data Funding and conflicts: Public database Read: abstract
NIDDK 2012 LiverTox: Green Tea (Clinical and Research Information on Drug-Induced Liver Injury) LiverTox (NCBI Bookshelf) · PMID 31643260	Database record	n/a	Green tea extract and, more rarely, large amounts of green tea leaf and extract n/a n/a · vs n/a	Green tea extract and, more rarely, ingestion of large amounts of green tea have been implicated in cases of clinically apparent acute liver injury, including instances of acute liver failure and either need for urgent liver transplantation or death. Rare but serious liver injury, mostly with extract Methods, limits and funding Outcomes: Drug-induced liver injury Limitations: Only the PubMed summary was read; the full LiverTox page was not opened Funding and conflicts: Public database Read: abstract
Pillukat 2014 Concentrated green tea extract induces severe acute hepatitis in a 63-year-old woman - a case report with pharmaceutical analysis Journal of Ethnopharmacology · PMID 24862489 · DOI	Case report	1 A 63-year-old woman taking green tea capsules on the advice of a cancer support group	Concentrated green tea extract capsules (EGCG 93.2% of the catechins found) extract Very high EGCG dose level per the analysis Not stated in the abstract · vs None	Severe hepatitis assessed as probably caused by the capsules (CIOMS/RUCAM score). The liver tissue pattern fit drug-induced hepatitis and other causes were excluded. After stopping, and a treatment called albumin dialysis, she recovered quickly and fully. Lab analysis of the capsules found no contaminants. Severe but reversible liver injury linked to concentrated extract Methods, limits and funding Outcomes: Liver injury Limitations: Single case; extract, not brewed tea Funding and conflicts: Not stated Read: abstract
Rezaei 2025 Effect of green tea supplementation on blood pressure in adults: a GRADE-assessed systematic review and dose-response meta-analysis of randomised controlled trials Blood Pressure · PMID 40497293 · DOI	Meta-analysis	36 randomised trials in adults	Green tea supplementation (forms not broken out in the abstract) not stated in abstract Not given here Studies of 8 weeks or less showed stronger effects · vs Control or placebo	Systolic blood pressure fell by 1.08 mmHg (95% CI -1.98 to -0.18; I2 85%) and diastolic by 1.09 mmHg (-1.67 to -0.50; I2 74%). Effects were stronger in people with raised starting blood pressure, shorter studies, Asian populations and women. No clear link between size of change and dose or duration. The authors call green tea a complementary approach, not a treatment. Very small average blood pressure drop with large differences between studies (SBP -1.08 (-1.98, -0.18); DBP -1.09 (-1.67, -0.50)) Methods, limits and funding Outcomes: Systolic and diastolic blood pressure Limitations: Very high heterogeneity; the abstract does not separate drink from extract; the GRADE rating is not given in the abstract Funding and conflicts: Not stated in the abstract Read: abstract
Taylor 1999 Probable antagonism of warfarin by green tea Annals of Pharmacotherapy · PMID 10332534 · DOI	Case report	1 A 44-year-old man with a mechanical aortic heart valve taking warfarin	Green tea drink leaf (drink) Half a gallon to a gallon of green tea a day for about a week About 1 week before the low reading · vs None	The INR fell from 3.79 to 1.37 about three weeks later, and was 1.14 a month after. He had started drinking one-half to one gallon of green tea a day about a week before the INR of 1.37. After stopping the tea the INR rose to 2.55. The authors suggested vitamin K in the tea. A drop in warfarin effect linked in time to a very large amount of green tea (INR 3.79 to 1.37) Methods, limits and funding Outcomes: Blood clotting test (INR) Limitations: One case; cannot prove cause; very large amount of tea; vitamin K content was not measured Funding and conflicts: Not stated Read: abstract
Xia 2019 Daily tea drinking is not associated with newly diagnosed non-alcoholic fatty liver disease in Chinese adults: the Tianjin chronic low-grade systemic inflammation and health cohort study Nutrition Journal · PMID 31711498 · DOI	Cross sectional	19350 19,350 adults in Tianjin, China	Daily tea drinking from a food questionnaire (green, oolong, black and jasmine tea) n/a Highest group: 1 cup a day or more Habitual · vs People who never drank tea	Before adjustment, people who drank at least 1 cup a day had higher odds of fatty liver: green tea 1.48 (1.33 to 1.65), oolong 1.50 (1.33 to 1.68), black 1.28 (1.13 to 1.46) and jasmine tea 1.36 (1.20 to 1.54). After adjusting for social, behavior, body size, diet and clinical factors, no significant link was found between tea drinking and fatty liver disease. No link after adjustment (Jasmine tea, unadjusted: 1.36 (1.20 to 1.54); no significant link after adjustment) Methods, limits and funding Outcomes: Newly diagnosed fatty liver disease (found on ultrasound) Limitations: Cross-sectional; tea was self-reported; the adjusted jasmine result is not given separately in the abstract. Funding and conflicts: Not stated in the abstract; the authors declare no competing interests Read: abstract
Yang 1997 Hypocholesterolemic effects of Chinese tea Pharmacological Research · PMID 9356199 · DOI	Animal study rat	Rats fed a cholesterol-enriched diet	Extracts of Chinese green tea, jasmine tea, Iron Buddha, oolong and pu-erh tea extract Not given in the abstract 8 weeks of tea treatment after 1 week of high-cholesterol diet · vs Cholesterol-enriched diet without tea	Chinese green tea and jasmine tea, both the least fermented, significantly lowered serum and liver cholesterol and reduced the rise in liver weight from fat deposits. All tea treatments lowered the atherogenic index and raised the HDL to total cholesterol ratio, while HDL cholesterol and triglycerides were not significantly changed. Individual catechins were higher in the green and jasmine tea extracts, and the authors suggest EGCG and ECG may explain the effect. Lower cholesterol in rats Methods, limits and funding Outcomes: Serum and liver cholesterol, HDL, triglycerides, liver weight Limitations: Rats and tea extracts, not people drinking tea. No numbers or amounts in the abstract. Funding and conflicts: Not stated in the abstract Read: abstract
Zheng 2011 Green tea intake lowers fasting serum total and LDL cholesterol in adults: a meta-analysis of 14 randomized controlled trials American Journal of Clinical Nutrition · PMID 21715508 · DOI	Meta-analysis	1136 14 randomised trials in adults	Green tea beverage or green tea extract leaf (drink) and extract Differed Differed · vs Control	Total cholesterol lowered by 7.20 mg/dL (95% CI -8.19 to -6.21) and LDL cholesterol by 2.19 mg/dL (-3.16 to -1.21); HDL cholesterol did not change significantly. The authors say changes were not influenced by type of intervention, dose, duration, health status or study quality. Small average drop in total and LDL cholesterol (TC -7.20 (-8.19, -6.21) mg/dL; LDL -2.19 (-3.16, -1.21) mg/dL) Methods, limits and funding Outcomes: Total, LDL and HDL cholesterol Limitations: Mixes drinks and extracts; the abstract gives no separate drink-only result; later reviews found no effect in short trials (see Igho-Osagie 2020) Funding and conflicts: Non-US government support listed in PubMed record; funding details not in the abstract Read: abstract
Zhong 2016 Determination of Pb (Lead), Cd (Cadmium), Cr (Chromium), Cu (Copper), and Ni (Nickel) in Chinese tea with high-resolution continuum source graphite furnace atomic absorption spectrometry Journal of Food and Drug Analysis · PMID 28911408 · DOI	Lab analysis lab	25 25 tea samples from China (green, yellow, white, oolong, black, pu-erh and jasmine teas)	Dry tea leaves leaf n/a n/a · vs China guideline limits	Lead in the leaves was 0.48 to 10.57 mg/kg, with 80% of values below the maximum in the Chinese guidelines. Cadmium (0.01 to 0.39 mg/kg) and chromium (0.27 to 2.45 mg/kg) met the stated limits. Copper was 7.73 to 63.71 mg/kg and only 64% of values met the standards. Nickel was 2.70 to 13.41 mg/kg. The authors say more attention should be paid to heavy metal contamination of tea. Metals found in leaves; jasmine tea values are not given separately in the abstract Methods, limits and funding Outcomes: Metal content of the leaves Limitations: Dry leaf, not the brewed drink, so it does not show what reaches the cup. Jasmine tea was one of the types sampled and its own values are not reported in the abstract. Funding and conflicts: The authors declare no conflicts of interest Read: abstract
n/a 2016 IARC (WHO): Press release no. 244, coffee, mate and very hot beverages (15 June 2016) n/a · Source	Authoritative guidance n/a	n/a	n/a n/a n/a n/a · vs n/a	IARC classified drinking very hot beverages (above 65 degrees C) as probably carcinogenic to humans (Group 2A), based on limited evidence from studies where tea or mate is traditionally drunk very hot (about 70 degrees C). It said the temperature, not the drink itself, appears responsible. Methods, limits and funding Outcomes: IARC classified drinking very hot beverages (above 65 degrees C) as probably carcinogenic to humans (Group 2A), based on limited evidence from studies where tea or mate is traditionally drunk very hot (about 70 degrees C). It said the temperature, not the drink itself, appears responsible. Limitations: Press release PDF read in full on 2026-10-25. Classification of a hazard, not the size of the risk. Read: full-text
n/a 2024 FDA: Spilling the Beans: How Much Caffeine Is Too Much? (content current as of 28 Aug 2024) n/a · Source	Authoritative guidance n/a	n/a	n/a n/a n/a n/a · vs n/a	Lists green tea at 37 mg caffeine per 12 fl oz drink. Cites 400 mg a day as an amount not generally linked with negative effects in most adults, with wide differences in sensitivity. Lists signs of too much caffeine (faster heart rate, palpitations, high blood pressure, insomnia, anxiety, jitters, upset stomach, nausea, headache). Says caffeinated drinks should be avoided for children younger than age 2 (quoting the Dietary Guidelines) and that pregnant or breastfeeding people should talk to a health professional. Methods, limits and funding Outcomes: Lists green tea at 37 mg caffeine per 12 fl oz drink. Cites 400 mg a day as an amount not generally linked with negative effects in most adults, with wide differences in sensitivity. Lists signs of too much caffeine (faster heart rate, palpitations, high blood pressure, insomnia, anxiety, jitters, upset stomach, nausea, headache). Says caffeinated drinks should be avoided for children younger than age 2 (quoting the Dietary Guidelines) and that pregnant or breastfeeding people should talk to a health professional. Limitations: Consumer guidance page, not a trial. Read in full on 2026-10-25. Read: full-text
n/a 2025 NCCIH (NIH): Green Tea: Usefulness and Safety (last updated February 2025). There is no NCCIH page for jasmine tea. n/a · Source	Authoritative guidance n/a	n/a	n/a n/a n/a n/a · vs n/a	Says definite conclusions cannot yet be reached on whether green tea helps for most uses. Cancer results inconsistent; lower heart disease risk seen in Asian but not Western groups; small cholesterol drops mostly from extract trials; no safety concerns reported for green tea as a drink in adults; liver injury uncommon and mostly with extract tablets or capsules; interactions with nadolol (high-dose green tea), atorvastatin (extract) and raloxifene; keep caffeine moderate in pregnancy. Methods, limits and funding Outcomes: Says definite conclusions cannot yet be reached on whether green tea helps for most uses. Cancer results inconsistent; lower heart disease risk seen in Asian but not Western groups; small cholesterol drops mostly from extract trials; no safety concerns reported for green tea as a drink in adults; liver injury uncommon and mostly with extract tablets or capsules; interactions with nadolol (high-dose green tea), atorvastatin (extract) and raloxifene; keep caffeine moderate in pregnancy. Limitations: A regulator-style fact sheet, not a trial. Page text read in full on 2026-10-25. Read: full-text
n/a 2026 NHS (UK): Foods to avoid in pregnancy (page last reviewed 15 June 2026) n/a · Source	Authoritative guidance n/a	n/a	n/a n/a n/a n/a · vs n/a	Says you should not have more than 200 mg of caffeine a day in pregnancy, estimates about 75 mg in a cup of tea such as black or green tea, and says too much caffeine has been linked to a higher chance of miscarriage and stillbirth. Methods, limits and funding Outcomes: Says you should not have more than 200 mg of caffeine a day in pregnancy, estimates about 75 mg in a cup of tea such as black or green tea, and says too much caffeine has been linked to a higher chance of miscarriage and stillbirth. Limitations: Public-health guidance, not a trial. Read in full on 2026-10-25. The per-cup figure is an estimate. Read: full-text
n/a 2026 EMA: Camelliae sinensis non fermentatum folium (green tea), herbal medicinal product page n/a · Source	Authoritative guidance n/a	n/a	n/a n/a n/a n/a · vs n/a	Page lists Camellia sinensis (L.) Kuntze, non fermentatum folium (green tea), therapeutic area "Fatigue and weakness", status "Assessment finalised", outcome "European Union herbal monograph". Documents: final EU herbal monograph (EMA/HMPC/283630/2012, published 29 April 2014), assessment report and an addendum to the assessment report (EMA/HMPC/30571/2022, published 26 September 2022). Methods, limits and funding Outcomes: Page lists Camellia sinensis (L.) Kuntze, non fermentatum folium (green tea), therapeutic area "Fatigue and weakness", status "Assessment finalised", outcome "European Union herbal monograph". Documents: final EU herbal monograph (EMA/HMPC/283630/2012, published 29 April 2014), assessment report and an addendum to the assessment report (EMA/HMPC/30571/2022, published 26 September 2022). Limitations: Only the web page was read. The monograph and assessment-report PDFs were not opened, so the wording of the monograph is NOT verified. Read: abstract
n/a 2026 PubChem: caffeine (CID 2519), formula C8H10N4O2 n/a · Source	Database record n/a	n/a	n/a n/a n/a n/a · vs n/a	Compound record confirmed through the PubChem API on 2026-10-25. Methods, limits and funding Outcomes: Compound record confirmed through the PubChem API on 2026-10-25. Limitations: Database record only. Read: full-text
n/a 2026 PubChem: epigallocatechin gallate (CID 65064), formula C22H18O11 n/a · Source	Database record n/a	n/a	n/a n/a n/a n/a · vs n/a	Compound record confirmed through the PubChem API on 2026-10-25. Methods, limits and funding Outcomes: Compound record confirmed through the PubChem API on 2026-10-25. Limitations: Database record only. Read: full-text
n/a 2026 PubChem: linalool (CID 6549), formula C10H18O n/a · Source	Database record n/a	n/a	n/a n/a n/a n/a · vs n/a	Identity confirmed through the PubChem API on 2026-10-25. Methods, limits and funding Outcomes: Compound record: linalool, C10H18O. Limitations: Database record. Read: full-text
n/a 2026 PubChem: methyl anthranilate (CID 8635), formula C8H9NO2 n/a · Source	Database record n/a	n/a	n/a n/a n/a n/a · vs n/a	Identity confirmed through the PubChem API on 2026-10-25. Methods, limits and funding Outcomes: Compound record: methyl anthranilate, C8H9NO2. Limitations: Database record. Read: full-text
n/a 2026 GBIF Backbone Taxonomy: Camellia sinensis (L.) Kuntze (usage key 3189635), retrieved 2026-10-25 n/a · Source	Database record n/a	n/a	n/a n/a n/a n/a · vs n/a	Accepted species, family Theaceae, order Ericales, genus Camellia. Synonyms listed by the API include Camellia bohea (L.) Sweet, Camellia chinensis (Sims) Kuntze and Camellia cantonensis Lour. Methods, limits and funding Outcomes: Accepted species, family Theaceae, order Ericales, genus Camellia. Synonyms listed by the API include Camellia bohea (L.) Sweet, Camellia chinensis (Sims) Kuntze and Camellia cantonensis Lour. Limitations: Taxonomic database record via the GBIF API. Read: full-text
n/a 2026 GBIF Backbone Taxonomy: Jasminum sambac (L.) Aiton (usage key 7587215), retrieved 2026-10-25 n/a · Source	Database record n/a	n/a	n/a n/a n/a n/a · vs n/a	Accepted species, family Oleaceae, confirmed through the GBIF API on 2026-10-25. Methods, limits and funding Outcomes: Accepted species, family Oleaceae (the olive family). Limitations: Taxonomic database record. Read: full-text

What we do not know yet

What the evidence supports: two tiny smell experiments and a few surveys in China; nothing strong.
No trial of drinking jasmine tea for any health outcome was found.
Cholesterol and weight results are from rats and mice. Blood pressure and cholesterol trials are of green tea, not jasmine tea.
No jasmine tea safety, liver, allergy, pregnancy or interaction study was found.
No caffeine value for jasmine tea itself, no jasmine tea metal or fluoride values and no pesticide survey were read.
LiverTox was read only as a summary; the EMA monograph, the full EFSA opinion and the EFSA caffeine opinion were not opened.

How new research is added

New studies are found by a saved PubMed search and are placed in a review queue. A person reads each one before it changes any evidence rating or safety wording. New publications never change ratings automatically.

Lab markers

What changed in blood or saliva tests during trials. A changed number is not the same as feeling or being healthier, and we give no "normal ranges".

Metabolic 1

↕

LDL cholesterol

Mixed results in trials

The cholesterol carried in the blood that is linked with higher heart disease risk.

Not enough evidence

Results and what it means

Why it was measured

To see whether tea changes blood fats.

Statistical vs. clinical meaning

Small and inconsistent in people; animal only for jasmine tea; a lab number, not a heart outcome.

Safety implication

None from the numbers; see the Safety tab.

Study	Result	People	Product
²¹	LDL -2.19 mg/dL (95% CI -3.16 to -1.21)	Adults in 14 trials	Green tea drinks or extracts (not jasmine tea)
⁷	No significant change in LDL	798 people in 14 trials	Green or black tea, 4 to 24 weeks (not jasmine tea)
²⁰	Serum and liver cholesterol lowered; HDL and triglycerides not significantly changed	Rats on a cholesterol-rich diet	Jasmine tea extract for 8 weeks (rats)

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Other 7

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Heart rate and heart rate variability

Lowered (heart rate) in trials

How fast the heart beats, and how much the time between beats changes, which reflects calming (parasympathetic) and alerting (sympathetic) nerve activity.

Very low certainty

Results and what it means

Why it was measured

To see whether the smell of jasmine tea changes the body's stress and calm balance.

Statistical vs. clinical meaning

Short change in healthy volunteers after smelling the tea; not a drinking result.

Safety implication

None reported.

Study	Result	People	Product
¹¹	Heart rate fell and the high-frequency component rose compared with a control odor (P < 0.05)	24 healthy volunteers	Jasmine tea odor for 5 minutes (smell only)
⁸	Weak odor raised calming nerve activity in all; strong odor raised alerting activity in those who disliked the smell	8 volunteers	Jasmine tea odor at two strengths (smell only)

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Mood scores (POMS test)

Improved (calmer) in trials

A questionnaire that scores mood states such as calm, tension and vigor.

Very low certainty

Results and what it means

Why it was measured

To see whether the smell of jasmine tea changes how calm people feel.

Statistical vs. clinical meaning

Self-reported mood in a lab; very short.

Safety implication

None reported.

Study	Result	People	Product
¹¹	Calm and vigorous mood states after the odor	24 healthy volunteers	Jasmine tea odor (and R-linalool) for 5 minutes

¹¹

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Blood pressure

Mixed results in trials

The pressure of blood in the arteries, written as a top and a bottom number.

Not enough evidence

Results and what it means

Why it was measured

To see whether tea lowers blood pressure.

Statistical vs. clinical meaning

Very small or no change, and no jasmine tea trial.

Safety implication

Caffeine can raise blood pressure in some people (FDA).

Study	Result	People	Product
¹⁷	Systolic -1.08 mmHg (95% CI -1.98 to -0.18); diastolic -1.09 mmHg (-1.67 to -0.50)	36 trials in adults	Green tea (not jasmine tea)
⁷	No significant change in blood pressure	798 people in 14 trials	Green or black tea, 4 to 24 weeks (not jasmine tea)

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Esophageal squamous cell cancer risk

No clear change (higher with more lifetime tea in men) in trials

The chance of having a cancer of the lining of the food pipe (esophagus).

Evidence against

Results and what it means

Why it was measured

To see whether jasmine tea drinkers differ in cancer risk.

Statistical vs. clinical meaning

No protection seen; a higher-risk signal in men.

Safety implication

May reflect heat or tea quality, not the tea itself.

Study	Result	People	Product
⁴	Ever versus never: OR 1.15 (95% CI 0.92 to 1.44); positive dose-response with lifetime amount in men	600 cases and matched controls in China	Self-reported jasmine tea drinking

⁴

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Stroke (past stroke in a survey)

No clear change in trials

Whether a person has had a stroke.

Not enough evidence

Results and what it means

Why it was measured

To see whether tea drinkers have had fewer strokes.

Statistical vs. clinical meaning

A survey cannot show cause.

Safety implication

None reported.

Study	Result	People	Product
¹	Jasmine tea OR 0.75 (95% CI 0.51 to 1.11), not significant; green tea OR 0.35 (0.18 to 0.72)	14,212 adults in China	Self-reported tea type

●

Fatty liver on ultrasound

No clear change in trials

Fat build-up in the liver seen on an ultrasound scan.

Not enough evidence

Results and what it means

Why it was measured

To see whether daily tea drinkers have more or less fatty liver.

Statistical vs. clinical meaning

Null result after adjustment.

Safety implication

None reported.

Study	Result	People	Product
¹⁹	No significant link after adjustment (jasmine tea 1.36, 1.20 to 1.54 before adjustment)	19,350 adults in Tianjin	At least 1 cup a day of jasmine tea (self-reported)

¹⁹

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Body weight gain (mice)

Lowered (in mice) in trials

How much weight the animals gained on a high-fat diet.

Not enough evidence

Results and what it means

Why it was measured

To see whether cold-brewed jasmine tea protects against diet-induced obesity.

Statistical vs. clinical meaning

Animal only; no numbers in the abstract.

Safety implication

None reported.

Study	Result	People	Product
¹²	Significantly less weight gain, fat deposit and liver injury in mice on a high-fat diet	Mice	Cold-brewed jasmine tea

¹²

Safety

What studies and official sources say about side effects, medicines and who should check first. Each point shows what kind of evidence it comes from.

Main points to know 4

Caffeine from the tea leaves is the main known effect. Jasmine tea is usually green tea scented with jasmine flowers, so it normally contains caffeine. No source read measured caffeine in jasmine tea itself. For green tea, the FDA lists 37 mg per 12 fl oz drink. The NHS gives about 75 mg for a cup of black or green tea. One US lab found 14 to 61 mg per serving across white, green and black teas, and steeping time changed the amount. The FDA says about 400 mg a day from all sources is not generally linked with harm in most adults. Too much can cause a fast heartbeat, jitters, poor sleep, upset stomach and headache. Food analysis and authoritative guidance ^{24 26 2}
Very hot drinks raise the risk of cancer of the food pipe. IARC says drinking very hot beverages (above 65 degrees C) probably causes cancer of the esophagus, and that the temperature, not the drink, appears responsible. In a study in China of jasmine tea, men who had drunk more over a lifetime had higher esophageal cancer risk. That study did not measure heat, so it cannot say whether heat or the tea explains it. Authoritative guidance and observational ^{23 4}
A cup of tea is not a concentrated extract. Rare liver injury reports for tea products are mostly about green tea extract capsules and tablets. EFSA judged catechins from traditionally prepared green tea infusions generally safe at European intakes and found liver enzyme rises with high-dose supplements. No source read covers jasmine tea extracts, so results should not be carried across. Regulator opinion ^{3 5 25}
No safety trials or case reports of jasmine tea itself were found. No liver case report, allergy report, medicine interaction study or pregnancy study of jasmine tea was found in the sources read. That is a gap, not proof of safety. Gap

Side effects 4

Effect	How often	Severity and recovery	Evidence
Too much caffeine: faster heartbeat, palpitations, jitters, poor sleep, anxiety, upset stomach, nausea, headache Listed by the FDA as signs of too much caffeine from any source.	Depends on how sensitive you are and total caffeine from all sources; no rate in the sources read	mild to moderate Reversible when caffeine is cut back	Authoritative guidance ²⁴
Lower iron absorption from a meal when tea is drunk with it A radio-iron study found black tea and herb teas cut iron absorption; jasmine and green tea were not tested.	Not measured for jasmine tea	mild; matters most if iron is already low Not stated	Human study (other teas) ⁶
Possible harm to the food pipe from very hot drinks IARC calls the evidence limited and says it is the temperature that appears responsible.	Not stated	serious if it occurs Not stated	Authoritative guidance ²³
Nausea, constipation, stomach discomfort and higher blood pressure (green tea extract supplements) NCCIH lists these for green tea extract. No jasmine tea study was found.	No rate in the source read	mild Not stated	Authoritative guidance ²⁵

Liver

No liver injury linked to jasmine tea was found in the sources read. For green tea, EFSA found that high-dose catechin supplements raised liver enzymes in trials and that rare liver injury has been reported after infusions, most probably an individual reaction. A systematic review of green tea safety found liver events came from concentrated, catechin-rich preparations taken as large single doses, not from brewed tea. NCCIH says liver injury is uncommon and mostly tied to extract capsules or tablets. LiverTox says green tea extract and, more rarely, large amounts of green tea have been implicated in liver injury, including liver failure; only its PubMed summary was read. One case report describes severe but reversible hepatitis in a 63-year-old woman taking concentrated green tea extract capsules. None of this was tested with jasmine tea. ^{3 5 25 15 16}

How often. No rate for jasmine tea could be found.

Monitoring. No agency monitoring advice for jasmine tea was read. People who have had liver problems from a supplement should ask a clinician before using any tea extract.

. 63-year-old woman with severe acute hepatitis judged probably caused by concentrated green tea extract capsules; she recovered fully after stopping and treatment. Extract, not brewed tea, and not jasmine tea.

This is a safety connection. It is not evidence that Jasmine Tea supports liver health.

Medicines and supplements 5

With	Why it matters	Importance	Evidence	What to do
Warfarin (blood thinner) prescription	The case authors suggested vitamin K in green tea could work against warfarin. Vitamin K in jasmine tea was not measured in any source read.	One 1999 case report on green tea: the INR fell from 3.79 to 1.37 after the man began drinking a very large amount of green tea daily, and rose to 2.55 after he stopped. Nothing was found about jasmine tea.	Case report (green tea) Very low certainty ¹⁸	If you take warfarin, tell your prescriber about any big change in how much tea you drink so your INR can be checked.
Nadolol (beta-blocker), atorvastatin (cholesterol medicine) and raloxifene (bone medicine) prescription	Not described in the source read.	NCCIH says high doses of green tea reduced blood levels of nadolol, green tea extract reduced blood levels of atorvastatin, and a study showed an interaction with raloxifene. None of this was tested with jasmine tea.	Authoritative guidance (green tea) Very low certainty ²⁵	Ask your pharmacist before taking tea extracts with these medicines.
Iron from food and iron supplements nutrient	Tea polyphenols reduced absorption of non-haem iron from a meal in a dose-related way in a radio-iron study of black tea and herb teas. Jasmine tea was not tested.	Black tea cut iron absorption by 79 to 94% in that study. Whether jasmine tea does the same is unknown.	Human study (other teas) Low certainty ⁶	If your iron is low, ask a clinician about when to drink tea.
Other sources of caffeine (coffee, cola, energy drinks, supplements) stimulant	Caffeine from all sources adds up.	The FDA counts caffeine from all sources toward the daily amount.	Authoritative guidance Moderate certainty ²⁴	Count jasmine tea with your other caffeine.
No jasmine tea drug interaction study found gap	n/a	No interaction study of jasmine tea with any medicine was found. The entries above come from green tea or other teas.	Gap Not enough evidence	If you take any medicine, ask your pharmacist.

Who should check first 6

Situation	Advice	Evidence
Pregnancy	Jasmine tea is not named as banned, but it contains caffeine from the tea base and counts toward the daily limit. The NHS says not more than 200 mg of caffeine a day in pregnancy and links too much caffeine to a higher chance of miscarriage and stillbirth. NCCIH says to keep caffeine to moderate levels in pregnancy. No source read covers jasmine tea or its extracts in pregnancy, so ask a clinician.	Authoritative guidance ^{26 25}
Breastfeeding	NCCIH says caffeine passes into breast milk; high intake can cause fussiness and poor sleep in the baby, but low-to-moderate intake usually has no effect. LactMed says the same about green tea and says no studies of oral green tea extract in breastfeeding were found. No jasmine tea data were found.	Authoritative guidance ^{25 14}
Infants and young children	The FDA, quoting the Dietary Guidelines for Americans, says caffeinated drinks should be avoided for children younger than 2. LactMed says giving tea directly to infants can interfere with iron absorption and cause anemia. Fluoride in tea matters most for young children.	Authoritative guidance ^{24 14 10}
Low iron or anemia	Ask a clinician. Tea drinks lowered iron absorption in a study of other teas.	Human study (other teas) ⁶
Heart rhythm problems, anxiety, trouble sleeping or high blood pressure	The FDA lists a faster heart rate, heart palpitations, high blood pressure, anxiety, jitters and insomnia among signs of too much caffeine. Ask a clinician how much caffeine suits you.	Authoritative guidance ²⁴
Taking warfarin, nadolol, atorvastatin or raloxifene	Ask your pharmacist or prescriber before changing how much tea or extract you take.	Case report and authoritative guidance (green tea) ^{18 25}

Overdose, product quality and regulators

Summary. No toxicity study of jasmine tea in people was found. The best-known concerns for tea are caffeine, very hot temperature, and for concentrated green tea extracts, the liver.

Animal. Mouse and rat studies of jasmine tea exist (obesity and cholesterol) but were not read for safety.

Human doses studied. The human jasmine tea studies found were a smell experiment and surveys. None reported safety outcomes for drinking.

High dose or long term signals. In a Chinese survey, men with higher lifetime jasmine tea drinking had higher esophageal cancer risk; heat was not measured, so the cause is unknown.

Overdose response. Not described for jasmine tea.

Genotoxicity. Not read.

Toxic or hazardous parts. Tea leaves and Jasminum sambac flowers are used. No source read compared parts for toxicity.

Measured contaminant data for jasmine tea are thin. A study of 25 Chinese teas that included jasmine tea measured metals in the dry leaves but does not give jasmine tea values in its abstract. A fluoride study of 12 brands that included jasmine tea found more fluoride in lower-grade tea. No pesticide survey of jasmine tea was found. That means unknown, not shown safe.

Heavy metals in the dry leaf. In 25 Chinese tea samples (green, yellow, white, oolong, black, pu-erh and jasmine), lead was 0.48 to 10.57 mg/kg and 80% of values were below the Chinese guideline maximum; cadmium 0.01 to 0.39 mg/kg and chromium 0.27 to 2.45 mg/kg met the stated limits; copper 7.73 to 63.71 mg/kg with only 64% meeting the standard; nickel 2.70 to 13.41 mg/kg. The abstract does not give jasmine tea separately, and it is dry leaf, not the brewed drink. ²²

Fluoride. Tea plants gather fluoride. In 12 brands of green, oolong, black and jasmine tea, fluoride rose as quality grade fell. A scoping review of 88 studies gave average fluoride of 1.37 mg/L for green tea and 2.73 for black tea, and does not list jasmine tea. Longer brewing released more fluoride. ^{13 10}

Pesticide residues. No pesticide survey of jasmine tea was found in the sources read.

Scenting method and label. No source read compares real flower scenting with added flavouring, or checks what the flowers add to the product.

Supplements and extracts. NCCIH says the FDA does not approve dietary supplements before sale. No quality testing of jasmine tea extracts was found. ²⁵

Body	Action	Date
NCCIH (NIH) (United States)	No page for jasmine tea. The green tea page says no safety concerns have been reported for green tea as a beverage in adults, lists extract side effects, rare liver injury, medicine interactions and a caffeine caution in pregnancy. source	2025-02
EFSA (European Union)	Opinion on safety of green tea catechins: infusions prepared the traditional way are generally considered safe at EU intakes; rare liver injury after infusions; supplements providing 800 mg EGCG a day or more raised liver enzymes. source	2018-04
EMA / HMPC (European Union)	Has an EU herbal monograph and assessment report for green tea leaf (Camellia sinensis, non fermentatum folium); the EMA page lists the therapeutic area as fatigue and weakness. No page for jasmine tea. source	2014-04-29 (monograph); 2022-09-26 (assessment addendum)
NICHD LactMed (United States)	Green tea: caffeine-related infant fussiness only at extremely high maternal intake; tea given directly to infants can cause anemia; no oral extract data in breastfeeding. source	2006
NHS (United Kingdom)	Pregnancy: no more than 200 mg of caffeine a day; about 75 mg in a cup of black or green tea; too much caffeine linked with higher chance of miscarriage and stillbirth. source	2026-06-15
US FDA (United States)	Caffeine consumer update: green tea 37 mg per 12 fl oz; 400 mg a day not generally associated with harm in most adults; lists signs of too much caffeine; caffeinated drinks to be avoided for children younger than 2. source	2024-08-28
IARC (WHO) (International)	Very hot beverages (above 65 degrees C) probably carcinogenic to humans (Group 2A); temperature, not the drink, appears responsible. source	2016-06-15

When to get medical help

Chest pain, a racing or irregular heartbeat or fainting: call emergency services.
Yellow skin or eyes, dark urine, pale stools, strong tiredness or pain in the upper right belly while using a tea extract: stop it and get medical care now.
Black stools, unusual bruising or bleeding if you take warfarin: contact your prescriber or emergency services.
Trouble swallowing, pain when swallowing or unexplained weight loss, especially if you often drink very hot drinks: see a doctor.
Very pale skin, breathlessness or marked tiredness in someone with low iron who drinks a lot of tea: see a clinician.

Stop using the product and contact a clinician or emergency service. In the US, Poison Control is 1-800-222-1222.

General information only, not medical advice. Ask a clinician or pharmacist before use, especially with medicines, in pregnancy or with a health condition. See the Natural Remedy Safety guide.

Frequently asked questions

What is jasmine tea?

Jasmine tea is usually green tea (from the tea plant Camellia sinensis) scented with flowers of Jasminum sambac. The tea gives caffeine and catechins, and the flowers give the smell. Some products may use another tea base or be flower-only infusions, so check the label.

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Does jasmine tea have caffeine?

Usually yes, from the tea leaf. No source read measured caffeine in jasmine tea itself. For green tea the FDA lists 37 mg per 12 fl oz, and one US lab found 14 to 61 mg per serving across white, green and black teas. The FDA says about 400 mg a day from all sources is not generally linked with harm in most adults.

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How is jasmine tea different from green tea?

Jasmine tea is green tea scented with flowers. The flowers add scent compounds such as linalool and methyl anthranilate. In one small smell test, jasmine tea odor lowered heart rate but the odor of green tea alone did not give the same effect. No study shows that the difference matters when you drink it.

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Does jasmine tea help you relax or sleep?

Only the smell has been tested. In 24 healthy volunteers, 5 minutes of smelling a low level of jasmine tea odor lowered heart rate and gave calmer mood scores. Drinking the tea, and sleep, were not tested. A strong odor raised alerting activity in people who disliked the smell. The tea also has caffeine, which can disturb sleep.

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Does jasmine tea lower blood pressure or cholesterol?

This has not been shown. No jasmine tea trial was found. An older rat study found jasmine tea extract lowered cholesterol. Green tea trials show about 1 mmHg lower blood pressure in one pooled analysis, a small cholesterol drop in another and no effect in a third.

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Does jasmine tea lower cancer risk?

No. A study in China of 600 esophageal and 914 stomach cancer cases found no link with ever drinking jasmine tea, and the authors saw no protective effect. Among men, more lifetime tea was linked with higher esophageal cancer risk. It cannot show cause, and heat was not measured.

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Is jasmine tea good for the heart or stroke?

Not shown. A survey of 14,212 adults in China linked tea drinking with fewer strokes. For jasmine tea alone the odds ratio was 0.75 and the range (0.51 to 1.11) includes no effect. A survey cannot show that tea is the cause.

Does jasmine tea help with weight loss?

This has not been shown in people. Cold-brewed jasmine tea reduced weight gain in mice on a high-fat diet. No human study of jasmine tea for weight was found. In a study of 19,350 adults, tea drinking was not linked with fatty liver after adjustment.

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Is jasmine tea safe in pregnancy, breastfeeding or for children?

It contains caffeine, which counts toward your daily limit. The NHS says not more than 200 mg a day in pregnancy. NCCIH says caffeine passes into breast milk, and low-to-moderate intake usually has no effect on the baby. The FDA says to avoid caffeinated drinks for children younger than 2. No source read covers jasmine tea itself, so ask a clinician.

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Can jasmine tea hurt the liver, and what about extracts?

No liver injury linked to jasmine tea was found. Rare liver injury has been reported for green tea extracts, and EFSA found liver enzyme rises with high-dose catechin supplements. Jasmine tea extracts have not been assessed, so do not assume they are the same or different. Stop any extract and get care if you have yellow skin or eyes or dark urine.

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Does jasmine tea interact with medicines or iron?

No jasmine tea interaction study was found. For green tea, NCCIH reports lower blood levels of nadolol and atorvastatin, and one case report links a very large amount with weaker warfarin effect. Tea lowered iron absorption in a study of black and herb teas. Ask your pharmacist.

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What about metals, fluoride and very hot tea?

A study of 25 Chinese teas that included jasmine tea found lead and copper above guideline values in some samples, but did not give jasmine tea values separately. Fluoride rose as quality fell in 12 brands that included jasmine tea. IARC says very hot drinks (above 65 degrees C) probably cause esophageal cancer because of heat, so let a cup cool.

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Editorial transparency

Written by: AlternativeMed editorial team. Research compiled with AI assistance, then checked against PubMed records.
Medical review: None. This page has not been reviewed by a physician or pharmacist.
First published: 2026-10-25
Last substantive update: 2026-10-25
How we research: We searched PubMed for jasmine tea research and read the abstracts of the jasmine tea papers. Green tea records used as background were checked against their PubMed summaries and key numbers re-read. We read the NCCIH, FDA, NHS, EMA and IARC pages, checked both plant names in GBIF and four compounds in PubChem. Only abstracts were read for papers, and one survey abstract is from a Chinese-language article. Certainty ratings are the compiler's own reading. Funding was not stated for most abstracts, so industry links are not ruled out. No study is cited that we could not verify.
How we rate evidence: See "How we rate evidence" in the Evidence tab.
Independence: No product is promoted on this page. No affiliate links are shown. This page is information, not a recommendation to drink or take anything.

Sources 33

Each source was opened and checked. Where we read only the abstract, it says so. The small numbers in the text point here.

Chen Z, Li Y, Zhao LC, et al. A study on the association between tea consumption and stroke [Chinese-language article, English abstract read]. Zhonghua Liu Xing Bing Xue Za Zhi. 2004. PMID 15555387. (abstract)
Chin JM, Merves ML, Goldberger BA, Sampson-Cone A. Caffeine content of brewed teas. Journal of Analytical Toxicology. 2008. PMID 19007524. DOI 10.1093/jat/32.8.702. (abstract)
EFSA Panel on Food Additives and Nutrient Sources added to Food (ANS), Younes M, Aggett P, et al. Scientific opinion on the safety of green tea catechins. EFSA Journal. 2018. PMID 32625874. DOI 10.2903/j.efsa.2018.5239. (abstract)
Gao Y, Hu N, Han X, et al. Jasmine tea consumption and upper gastrointestinal cancer in China. Cancer Causes & Control. 2009. PMID 19597950. DOI 10.1007/s10552-009-9394-z. (abstract)
Hu J, Webster D, Cao J, et al. The safety of green tea and green tea extract consumption in adults - Results of a systematic review. Regulatory Toxicology and Pharmacology. 2018. PMID 29580974. DOI 10.1016/j.yrtph.2018.03.019. (abstract)
Hurrell RF, Reddy M, Cook JD. Inhibition of non-haem iron absorption in man by polyphenolic-containing beverages. British Journal of Nutrition. 1999. PMID 10999016. (abstract)
Igho-Osagie E, Cara K, Wang D, et al. Short-Term Tea Consumption Is Not Associated with a Reduction in Blood Lipids or Pressure: A Systematic Review and Meta-Analysis of Randomized Controlled Trials. Journal of Nutrition. 2020. PMID 33188386. DOI 10.1093/jn/nxaa295. (abstract)
Inoue N, Kuroda K, Sugimoto A, et al. Autonomic nervous responses according to preference for the odor of jasmine tea. Bioscience, Biotechnology, and Biochemistry. 2003. PMID 12843644. DOI 10.1271/bbb.67.1206. (abstract)
Ito Y, Sugimoto A, Kakuda T, Kubota K. Identification of potent odorants in Chinese jasmine green tea scented with flowers of Jasminum sambac. Journal of Agricultural and Food Chemistry. 2002. PMID 12166975. DOI 10.1021/jf020282h. (abstract)
Jayasingha H, Amarasooriya G, Rajapaksha N, et al. Fluoride in tea: accumulation, dietary exposure, and future strategies for risk mitigation in food safety; a scoping review. Critical Reviews in Food Science and Nutrition. 2025. PMID 40504749. DOI 10.1080/10408398.2025.2516756. (abstract)
Kuroda K, Inoue N, Ito Y, et al. Sedative effects of the jasmine tea odor and (R)-(-)-linalool, one of its major odor components, on autonomic nerve activity and mood states. European Journal of Applied Physiology. 2005. PMID 15976995. DOI 10.1007/s00421-005-1402-8. (abstract)
Li A, Wang J, Zhang X, et al. Cold-Brewed Jasmine Tea Attenuates High-Fat Diet-Induced Obesity and Gut Microbial Dysbiosis. Nutrients. 2022. PMID 36558518. DOI 10.3390/nu14245359. (abstract)
Lu Y, Guo WF, Yang XQ. Fluoride content in tea and its relationship with tea quality. Journal of Agricultural and Food Chemistry. 2004. PMID 15237954. DOI 10.1021/jf0308354. (abstract)
NICHD / NLM. Drugs and Lactation Database (LactMed): Green Tea. LactMed (NCBI Bookshelf). 2006. PMID 30000907. (abstract)
NIDDK. LiverTox: Green Tea (Clinical and Research Information on Drug-Induced Liver Injury). LiverTox (NCBI Bookshelf). 2012. PMID 31643260. (abstract)
Pillukat MH, Bester C, Hensel A, et al. Concentrated green tea extract induces severe acute hepatitis in a 63-year-old woman - a case report with pharmaceutical analysis. Journal of Ethnopharmacology. 2014. PMID 24862489. DOI 10.1016/j.jep.2014.05.015. (abstract)
Rezaei M, Akhavan N, Fathi F, et al. Effect of green tea supplementation on blood pressure in adults: a GRADE-assessed systematic review and dose-response meta-analysis of randomised controlled trials. Blood Pressure. 2025. PMID 40497293. DOI 10.1080/08037051.2025.2517122. (abstract)
Taylor JR, Wilt VM. Probable antagonism of warfarin by green tea. Annals of Pharmacotherapy. 1999. PMID 10332534. DOI 10.1345/aph.18238. (abstract)
Xia Y, Wang X, Zhang S, et al. Daily tea drinking is not associated with newly diagnosed non-alcoholic fatty liver disease in Chinese adults: the Tianjin chronic low-grade systemic inflammation and health cohort study. Nutrition Journal. 2019. PMID 31711498. DOI 10.1186/s12937-019-0502-y. (abstract)
Yang TT, Koo MW. Hypocholesterolemic effects of Chinese tea. Pharmacological Research. 1997. PMID 9356199. DOI 10.1006/phrs.1997.0176. (abstract)
Zheng XX, Xu YL, Li SH, et al. Green tea intake lowers fasting serum total and LDL cholesterol in adults: a meta-analysis of 14 randomized controlled trials. American Journal of Clinical Nutrition. 2011. PMID 21715508. DOI 10.3945/ajcn.110.010926. (abstract)
Zhong WS, Ren T, Zhao LJ. Determination of Pb (Lead), Cd (Cadmium), Cr (Chromium), Cu (Copper), and Ni (Nickel) in Chinese tea with high-resolution continuum source graphite furnace atomic absorption spectrometry. Journal of Food and Drug Analysis. 2016. PMID 28911408. DOI 10.1016/j.jfda.2015.04.010. (abstract)
n/a. IARC (WHO): Press release no. 244, coffee, mate and very hot beverages (15 June 2016). n/a. 2016. (full-text)
n/a. FDA: Spilling the Beans: How Much Caffeine Is Too Much? (content current as of 28 Aug 2024). n/a. 2024. (full-text)
n/a. NCCIH (NIH): Green Tea: Usefulness and Safety (last updated February 2025). There is no NCCIH page for jasmine tea.. n/a. 2025. (full-text)
n/a. NHS (UK): Foods to avoid in pregnancy (page last reviewed 15 June 2026). n/a. 2026. (full-text)
n/a. EMA: Camelliae sinensis non fermentatum folium (green tea), herbal medicinal product page. n/a. 2026. (abstract)
n/a. PubChem: caffeine (CID 2519), formula C8H10N4O2. n/a. 2026. (full-text)
n/a. PubChem: epigallocatechin gallate (CID 65064), formula C22H18O11. n/a. 2026. (full-text)
n/a. PubChem: linalool (CID 6549), formula C10H18O. n/a. 2026. (full-text)
n/a. PubChem: methyl anthranilate (CID 8635), formula C8H9NO2. n/a. 2026. (full-text)
n/a. GBIF Backbone Taxonomy: Camellia sinensis (L.) Kuntze (usage key 3189635), retrieved 2026-10-25. n/a. 2026. (full-text)
n/a. GBIF Backbone Taxonomy: Jasminum sambac (L.) Aiton (usage key 7587215), retrieved 2026-10-25. n/a. 2026. (full-text)

Education, not medical advice. This page is for general information. It does not diagnose or treat any condition and is not a substitute for care from a qualified health professional. Natural does not automatically mean safe. Ask a clinician or pharmacist before changing your care, especially if you take medication, are pregnant or breastfeeding, or have a health condition.