Legumes · Legume sprouts
Bean Sprouts
Vigna radiata (mung bean sprouts); Lens culinaris (lentil sprouts) · also called Mung bean sprouts, moong sprouts, green gram sprouts, lentil sprouts
Bean sprouts are young seedlings grown from mung beans or lentils. Raw and lightly cooked sprouts can carry germs such as Salmonella, E. coli and Listeria, and the FDA says children, older adults, pregnant women and people with weak immune systems should avoid them. Cooking thoroughly kills the germs. Sprouts are a low-calorie source of vitamin K, folate and vitamin C, but no trial shows a health benefit from eating them.
General information, not medical advice. Last substantive update · Not medically reviewed. A named clinician has not signed off on this page. How this page is made
About Bean Sprouts
Bean sprouts are young seedlings of mung beans or lentils. Raw or lightly cooked sprouts can carry Salmonella, E. coli and Listeria, which is the main safety point. The FDA and CDC advise children, older adults, pregnant women and people with weak immune systems to avoid them raw, and say cooking thoroughly kills the germs. Sprouts are a light food with vitamin K, folate and vitamin C, but no human trial shows a health benefit from eating them.
Read this first: the food-poisoning risk
The FDA says sprouts that are served raw or lightly cooked may contain bacteria that cause foodborne illness. Sprouts grow from seeds under warm, humid conditions that suit Salmonella, Listeria and E. coli. If just a few germs are on or in the seed, they can grow to high levels while it sprouts, even if you grow your own sprouts cleanly at home.
This has happened many times. Raw mung bean sprouts were linked to a Salmonella outbreak in the UK in 1988, and to a Salmonella Newport outbreak in Germany and the Netherlands in 2011 (106 cases in Germany, 20 in the Netherlands). A large E. coli O104:H4 outbreak in Germany in 2011, with a serious kidney and blood complication, was tied to sprouts. A 2016 survey found Salmonella in 4 of 554 retail sprout samples (0.7%); all four were mung bean sprouts, and two were sold as ready to eat.
A CDC journal review says germs can reach more than 10 million per gram without changing how sprouts look, so you cannot tell by looking. Washing reduces germs but does not remove them (FDA), and chlorine and other disinfectants do not eliminate them (CDC review; a 2019 Italian study found a chlorinated wash could not remove them completely).
Who should avoid raw sprouts
The FDA says children, older adults, pregnant women, and people with weak immune systems (such as transplant patients and people with HIV/AIDS, cancer or diabetes) should avoid raw or lightly cooked sprouts of any kind, including mung bean sprouts. An archived CDC page gives the same advice.
The FDA says foodborne illness in pregnancy can lead to miscarriage, premature delivery, stillbirth or the illness or death of a newborn. If you are in any of these groups, ask your doctor or midwife about sprouts, even cooked ones.
Does cooking make them safe?
The FDA says cooking produce thoroughly kills harmful bacteria and reduces the risk of illness, and an archived CDC page says cooking sprouts thoroughly kills any harmful bacteria. The sources read do not give a time or temperature for sprouts, and the FDA does not define 'lightly cooked'. This page gives no cooking times.
What they are
Bean sprouts are the whole young seedling: the seed, its first root and a short shoot. The common ones are mung bean sprouts (Vigna radiata) and lentil sprouts (Lens culinaris). Mung bean sprouts are mostly water. Lentil sprouts are a different food with much more energy and protein per 100 g.
USDA data for raw mung bean sprouts, per cup (104 g): about 31 kcal, 3.2 g protein, 1.9 g fibre, 34 mcg vitamin K (29% of the Daily Value), 63 mcg folate (16%), 13.7 mg vitamin C (15%) and 155 mg potassium. Raw lentil sprouts, per cup (77 g): about 82 kcal, 6.9 g protein and 2.5 mg iron.
What the research shows about benefits
The firm facts are nutrient values. We found no human trial of eating bean sprouts for cholesterol, blood sugar, weight, immunity, cancer or any other health outcome.
Pooled trials of cooked pulses (beans, chickpeas, lentils and peas) found LDL cholesterol 0.14 mmol/L lower. A review of cooked legume trials found blood sugar effects only in type 2 diabetes and rated the evidence very low. Sprouts are a different food, so these results cannot be assumed.
Lab studies of lentil seeds say germination raises protein digestibility, lowers phytic acid and tannins, raises phenolic compounds, and lowers predicted glycemic index in a test tube. These are food-chemistry results, not results in people.
Sprouts versus cooked beans and lentils
Results for cooked beans and lentils are not results for sprouts. A sprout is a different food: mostly water (mung), usually eaten raw or lightly cooked, with different nutrients and a germ risk that the dried bean does not have.
Amounts
This page gives no amounts to eat. Ask a doctor, pharmacist or dietitian what is right for you, especially if you take warfarin, have a weak immune system, are pregnant or have a legume allergy.
At a glance
Traditional uses history, not proof
- Eaten raw, lightly cooked or stir-fried as a crunchy vegetable
- Long use as food is not proof that it treats any condition
Studied for research
- Vitamins and minerals in a low-calorie food, high certainty for the nutrient content only (no health trial)
- Cholesterol and heart health, insufficient for sprouts (the evidence is for cooked pulses)
- Blood sugar, insufficient for sprouts (cooked legumes: very low; lentil sprouts: test tube only)
- Digestibility and antinutrients, insufficient (lab studies only)
- Antioxidant compounds, insufficient (test-tube measures only)
Main compounds
- Vitamin K
- Folate
- Vitamin C
- Protein
- Phenolic compounds (lab)
Common forms
- Raw sprouts: the form with the food-poisoning risk
- Thoroughly cooked sprouts: cooking kills harmful bacteria (FDA)
- Home-sprouted seeds: the FDA says home growing does not remove the risk
- Lentil sprouts: a different food from mung bean sprouts
Research links: FDA: Selecting and serving produce safely (sprouts) · 2014 Salmonella Newport outbreak in mung bean sprouts, Germany and the Netherlands · 2016 survey: Salmonella in retail bean sprouts · Research Library · Genes & Biomarkers Library
What it is and its history
- Accepted scientific name
- Vigna radiata (sprouted); Lens culinaris (sprouted)
- Naming authority
- Mung bean: Vigna radiata (L.) R.Wilczek (GBIF accepted). Lentil: GBIF accepts Vicia lens; Lens culinaris Medik. is its synonym and is the name food sources use.
- Synonyms
- Name: Lens culinaris Medik.; Note: Name used in food and nutrition sources; GBIF treats it as a synonym of Vicia lens.
- Common names
- Bean sprouts (English); Mung bean sprouts (English); Moong sprouts (English); Green gram sprouts (English); Lentil sprouts (English); Brotes de soya (frijol mungo) (Spanish)
- Family or group
- Fabaceae (the legume or pea family), as given by GBIF
- Classification
- Plantae > Tracheophyta > Magnoliopsida > Fabales > Fabaceae > Vigna (mung bean); Vicia (lentil, per GBIF) > Vigna radiata; Vicia lens (Lens culinaris)
- Native range
- Not verified from a source read.
- Habitat
- Not verified from a source read.
- What it looks like
- Roots: Not verified.; Stems: Not verified.; Leaves: Not verified.; Flowers: Not verified.; Fruit: The part eaten is the whole young seedling: the seed, its first root and a short shoot (existing nutrient summary; not re-verified from a botanical source).
- Cultivation
- Sprouts are grown from seeds under warm, humid conditions (FDA, read 2026-10-26). Other growing details were not verified.
- Harvest and processing
- Sold fresh and refrigerated, sometimes ready to eat. Some bean sprouts are soaked in sulphites (a 2024 method paper says this is common).
- Look-alikes and adulterants
- Name: Alfalfa and clover sprouts; Note: Other raw sprouts with their own page. Outbreaks have been tied to them too; the FDA advice covers sprouts of any kind.; Name: Soy and black bean sprouts; Note: Also sold as bean sprouts; a 2024 paper studied black bean, soybean and mung bean sprouts together. USDA values here are for mung and lentil sprouts only.; Name: Dried mung beans and lentils; Note: The cooked seed is a different food with different nutrients and a different safety profile.
- Sustainability and conservation
- Not assessed.
Photographs
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 |
|---|---|---|---|---|
| Vitamin K (phylloquinone) | vitamin | Sprout USDA: 33 mcg per 100 g raw mung bean sprouts (34 mcg per cup) | Needed for blood clotting. Foods with vitamin K matter for people on warfarin (MedlinePlus). 23 20 | Nutrient data |
| Folate (DFE) | vitamin | Sprout USDA: 61 mcg per 100 g raw mung bean sprouts; 100 mcg per 100 g raw lentil sprouts | A B vitamin needed for cell growth. No trial of folate from sprouts was read. 23 22 | Nutrient data |
| Vitamin C | vitamin | Sprout USDA: 13.2 mg per 100 g raw mung bean sprouts; 16.5 mg per 100 g raw lentil sprouts | A vitamin. Lab germination studies report that vitamin C appears or rises when seeds sprout, but shop sprouts differ from lab sprouts. 23 22 | Nutrient data |
| Protein | protein | Sprout USDA: 3.04 g per 100 g raw mung bean sprouts; 8.96 g per 100 g raw lentil sprouts | A source of plant protein. Lentil sprouts hold nearly three times as much per 100 g as mung sprouts, because mung sprouts are mostly water. 23 22 | Nutrient data |
| Phenolic compounds | phenolic | Sprout Lab study of lentil: 1341 mg/100 g dry weight in seed, up to 1630 mg/100 g in sprouts | Antioxidant in the test tube. Not shown to act in people who eat sprouts. 6 | Laboratory research |
Mechanisms, receptors and pathways
| Target or pathway | Gene or receptor | What was found | Level |
|---|---|---|---|
| Seed germination and antinutrients | Not specified | In a lab study of lentil, germination for 3 to 6 days lowered tannins and phytic acid and raised protein, fibre and free amino acids. A 2026 review says germination improves protein digestibility and micronutrient availability. 6 8 | Laboratory research |
| Starch and predicted glycemic index (test tube) | Not specified | In lentil sprouts grown in the lab, germination lowered starch content, enzyme-blocking activity and predicted glycemic index, depending on growing conditions. 11 | Laboratory research |
| Bacterial growth during sprouting | Not applicable | When mung bean seeds were deliberately contaminated, STEC, Salmonella and Listeria grew by 5 to 6 log CFU/g within 3 days of sprouting; a chlorinated wash lowered but did not remove them. The FDA and a 2025 review say sprouting conditions (warm, humid, nutrient-rich) favour these germs. 7 16 13 | Laboratory research |
| Cholesterol (cooked pulses as a group, not sprouts) | Not specified | Whole cooked pulses lowered LDL cholesterol a little in pooled trials. The reason was not given in the abstract read. 2 | Human data |
Absorption, metabolism and elimination
- Absorption
- Not found for sprout nutrients.
- Distribution
- Not found.
- Metabolism
- Not found.
- Elimination
- Not found.
- Bioavailability
- A 2026 review says germination improves protein digestibility and micronutrient availability; no human measurement of absorption from sprouts was read.
Isolated compounds versus whole extracts
The cholesterol and blood sugar research is on cooked, mature beans and lentils and cannot be assumed for sprouts. A sprout is a different food: mostly water (mung), usually eaten raw or lightly cooked, with different nutrients and a germ risk. The lab results on sprouting come from sprouts grown in the lab for a set number of days.
Nutritional composition
Nutrition from USDA FoodData Central (SR Legacy, April 2018 release; values read 2026-10-26 from a saved copy of the data feed held with the project, because the live USDA service was rate-limited): raw mung bean sprouts (FDC 169957), raw lentil sprouts (FDC 168427) and boiled mung bean sprouts (FDC 169137). Raw mung bean sprouts, per 100 g: 30 kcal, 3.04 g protein, 5.94 g carbohydrate, 1.8 g fibre, about 90.4 g water, 33 mcg vitamin K, 61 mcg folate (DFE), 13.2 mg vitamin C, 0.164 mg copper, 0.188 mg manganese, 0.124 mg riboflavin, 149 mg potassium and 6 mg sodium. One cup (104 g): about 31 kcal, 3.2 g protein, 6.2 g carbohydrate, 1.9 g fibre, 34 mcg vitamin K (29% of the Daily Value), 63 mcg folate (16%), 13.7 mg vitamin C (15%), 0.17 mg copper (19%) and 155 mg potassium. Raw lentil sprouts, per 100 g: 106 kcal, 8.96 g protein, 22.14 g carbohydrate, 3.21 mg iron, 100 mcg folate (DFE), 16.5 mg vitamin C, 0.352 mg copper, 0.506 mg manganese, 0.228 mg thiamin, 1.51 mg zinc, 173 mg phosphorus and 322 mg potassium; one cup (77 g) is about 82 kcal and 6.9 g protein. Cup values are the 100 g values multiplied by the portion weight. The two sprouts are different foods and should not be swapped in a nutrient count. Values vary with variety, sprouting time and storage. Boiled and drained mung bean sprouts (FDC 169137, 1 cup = 124 g), per 100 g: 21 kcal, 2.03 g protein, 0.8 g fibre, 22.7 mcg vitamin K, 29 mcg folate (DFE) and 11.4 mg vitamin C, so boiling lowers the vitamin content per 100 g; stir-fried and canned sprouts were not read. These figures describe the food and are not advice on how much to eat.
1 high certainty4 not enough evidence
What was looked at
The 5 benefits and uses checked for Bean Sprouts, each with how strong the evidence is. Tap one to open it.
- Vitamins and minerals in a low-calorie food (nutrient content)High certainty
- Cholesterol and heart health (shown for cooked pulses, not sprouts)Not enough evidence
- Blood sugar (shown for cooked legumes; lab test only for lentil sprouts)Not enough evidence
- What sprouting changes in the seed (digestibility and antinutrients, lab findings)Not enough evidence
- Antioxidant compounds (test-tube measures only)Not enough evidence
Lab markers tracked in the studies
LDL cholesterolFasting blood glucose
What is Bean Sprouts good for?
The main studied uses and how strong the human evidence is for each. For sprouts, most of the evidence is nutrient data or lab work, and the heart and blood sugar studies are about cooked pulses. The strongest research on sprouts is about food safety (see Safety).
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.
Vitamins and minerals in a low-calorie food (nutrient content)
High certaintyRaw mung bean sprouts are mostly water. A cup (104 g) has about 31 kcal, and USDA lists vitamin K, copper, folate and vitamin C at 15% or more of the Daily Value. This is a measured nutrient fact, not a trial of any health outcome. Raw sprouts also carry a food-poisoning risk (see Safety).
2 studiesRaw sprouts. Boiled mung bean sprouts have fewer calories and less vi…
Studies, doses and limits
What the trials found
USDA food composition data for raw mung bean sprouts and raw lentil sprouts. No trial of eating sprouts for a health outcome was found.
Results
Per 100 g raw mung bean sprouts USDA lists 30 kcal, 3.04 g protein, 1.8 g fibre, 33 mcg vitamin K, 61 mcg folate (DFE) and 13.2 mg vitamin C. Raw lentil sprouts are a different food: 106 kcal and 8.96 g protein per 100 g. See the Science tab for full figures.
Effect sizes as reported
Per 1 cup (104 g) of raw mung bean sprouts: about 31 kcal, 3.2 g protein, 1.9 g fibre, 34 mcg vitamin K (29% Daily Value), 63 mcg folate (16%), 13.7 mg vitamin C (15%).
Why this rating
High for the nutrient content only. It says nothing about health effects.
Form and dose studied
Raw sprouts. Boiled mung bean sprouts have fewer calories and less vitamin K, folate and vitamin C per 100 g than raw (USDA 169137: 21 kcal, 22.7 mcg, 29 mcg, 11.4 mg).
Who was studied
General adult diet.
Limits
A nutrient fact, not a trial. Values vary with variety, sprouting time and storage. Mung and lentil sprouts differ a lot.
Why researchers looked
People eat sprouts for crunch and because they are a fresh, light food, so they ask what nutrients they hold.
Traditional use
Mung bean sprouts are eaten raw, lightly cooked or stir-fried. How long a food has been eaten is not proof that it treats any condition.
Proposed mechanism Authoritative guidance
Not tested. Vitamins are nutrients the body needs; this page does not rely on a mechanism for any claim.
A proposed mechanism does not show that the effect happens in people.
Raw or lightly cooked sprouts can cause food poisoning. Vitamin K matters for people taking warfarin. See the Safety tab.
Cholesterol and heart health (shown for cooked pulses, not sprouts)
Not enough evidencePooled trials of cooked beans, chickpeas, lentils and peas found slightly lower LDL cholesterol. No trial of eating bean sprouts for cholesterol or heart health was found, so the result cannot be assumed for sprouts.
1 studiesCooked whole pulses in trials; not sprouts.
Studies, doses and limits
What the trials found
A 2026 systematic review and meta-analysis of 38 randomised trials (2,095 adults) of whole dietary pulses eaten cooked. The abstract does not mention sprouts.
Results
Whole pulses lowered LDL cholesterol by 0.14 mmol/L on average, with similar results across pulse types. That is for mature pulses eaten in meals, not for sprouts.
Effect sizes as reported
LDL -0.14 mmol/L (95% CI -0.19 to -0.08); non-HDL -0.22 mmol/L; apoB -0.08 g/L; HDL -0.03 mmol/L. Median 6 weeks.
Why this rating
Insufficient for bean sprouts: no sprout trial was found. The reviewers rated certainty moderate to high for cooked pulses, which are a different food.
Form and dose studied
Cooked whole pulses in trials; not sprouts.
Who was studied
Adults in trials, mixed health status.
Limits
Cooked, mature pulses. Sprouts are usually eaten raw or lightly cooked and are mostly water, with different nutrients. LDL is a blood marker, not proof of fewer heart attacks.
Why researchers looked
Beans and lentils are studied for heart health, and people ask whether the sprouted form works the same way.
Proposed mechanism Authoritative guidance
Not tested for sprouts. This page does not rely on a mechanism for any claim.
A proposed mechanism does not show that the effect happens in people.
None specific for cooked pulses. See the Safety tab for sprouts.
Blood sugar (shown for cooked legumes; lab test only for lentil sprouts)
Not enough evidenceA review of 18 trials of cooked legumes found effects on blood sugar only in people with type 2 diabetes, and rated the evidence very low. A test-tube study of lentil sprouts predicted a lower glycemic index after germination, but that is not a study in people. No trial of eating bean sprouts for blood sugar was found.
2 studiesCooked legumes in the trials; lab-germinated lentil sprouts in the te…
Studies, doses and limits
What the trials found
One 2020 systematic review of randomised trials of cooked legumes (18 trials). One test-tube study of lentil sprouts grown in a lab. No human trial of sprouts.
Results
In the review, only the 5 trials in people with type 2 diabetes reported significant effects (for example lower fasting glucose in three of them). The authors rated the quality of evidence very low. The lentil sprout study reports predicted values from test-tube digestion.
Effect sizes as reported
Not pooled in the review abstract. Lab study: starch, enzyme-blocking activity and predicted glycemic index fell on germination (values depended on growing conditions).
Why this rating
Insufficient for sprouts: only a test-tube study. Very low (the reviewers' own rating) for cooked legumes.
Form and dose studied
Cooked legumes in the trials; lab-germinated lentil sprouts in the test-tube study.
Who was studied
Adults with and without diabetes (cooked legume trials).
Limits
Not sprouts as sold. A predicted glycemic index is not blood sugar in people.
Why researchers looked
Legumes are a low-glycemic food, and sprouting changes their starch, so researchers look at blood sugar.
Proposed mechanism Laboratory
In the lentil lab study, germination lowered starch content and predicted glycemic index values (test-tube digestion).
A proposed mechanism does not show that the effect happens in people.
If you take medicine for diabetes, ask your clinic before big diet changes. See the Safety tab for sprout food safety.
What sprouting changes in the seed (digestibility and antinutrients, lab findings)
Not enough evidenceLab studies and a review say germination raises protein digestibility and lowers antinutrients such as phytic acid and tannins. These are food-chemistry results. They do not show a health benefit in people who eat sprouts.
2 studiesLab-germinated lentil seeds; the review covers many legumes and metho…
Studies, doses and limits
What the trials found
A 2026 review of legume processing and a lab study of lentil seeds germinated for 3 to 6 days. No human trial of mineral absorption from sprouts.
Results
Lentil sprouting raised protein, crude fibre and free amino acids and lowered tannins and phytic acid. The review says germination improves protein digestibility and micronutrient availability, and that no single processing method gives every benefit.
Effect sizes as reported
Lentil lab study: significant increases in protein, fibre and amino acids, significant decreases in tannins and phytic acid (P at or below 0.05). Review: germination improves digestibility (no single figure).
Why this rating
Insufficient: lab and review evidence only; no human measurement of absorption or health.
Form and dose studied
Lab-germinated lentil seeds; the review covers many legumes and methods.
Limits
Lab germination of dry seed differs from shop sprouts, and sprouts eaten raw keep the germ risk. The lentil study compares seed with sprouts and not with cooked lentils.
Why researchers looked
Phytic acid and tannins can block some mineral absorption, so researchers ask whether sprouting helps.
Proposed mechanism Laboratory
The seed uses up some stored compounds during germination and makes others (for example amino acids). Measured in the lab; not tested in people.
A proposed mechanism does not show that the effect happens in people.
None found for the chemistry itself. Sprouts as a food carry a germ risk (see Safety tab).
Antioxidant compounds (test-tube measures only)
Not enough evidenceIn the lentil lab study, phenolic compounds and test-tube antioxidant measures rose after sprouting. No study shows that these compounds act in people who eat sprouts.
1 studiesLab-germinated lentil sprouts.
Studies, doses and limits
Results
Phenolics rose from 1341 mg/100 g dry weight in raw lentil seeds to 1411 to 1630 mg/100 g in sprouts. Test-tube antioxidant results were higher in sprouts.
Effect sizes as reported
Phenolics 1341 mg/100 g DW (raw seed) to 1411.5, 1463.0, 1630.2 and 1510.1 mg/100 g at 3, 4, 5 and 6 days.
Why this rating
Insufficient: test-tube chemistry only.
Form and dose studied
Lab-germinated lentil sprouts.
Limits
A test-tube measure is not a health outcome. One lentil study; mung bean sprouts were not studied in the papers read.
Why researchers looked
Phenolic compounds are measured in plant foods because some act as antioxidants in the test tube.
Proposed mechanism Laboratory
Phenolics can neutralise reactive molecules in the test tube. This is not shown in people eating sprouts.
A proposed mechanism does not show that the effect happens in people.
None found.
Connections to the rest of health
How Bean Sprouts 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
A. Wellness goals
| Connected to | Kind of connection | Evidence status | Context | Studies |
|---|---|---|---|---|
| Balanced Nutrition | High certainty | Vitamins and minerals in a low-calorie food (nutrient content): Raw mung bean sprouts are mostly water. A cup (104 g) has about 31 kcal, and USDA lists vitamin K, copper, folate and vitamin C at 15% or more of the Daily Value. This is a measured nutrient fact, not a trial of any health outcome. Raw sprouts also carry a food-poisoning risk (see Safety). | 23 22 | |
| Heart Health | Not enough evidence | Cholesterol and heart health (shown for cooked pulses, not sprouts): Pooled trials of cooked beans, chickpeas, lentils and peas found slightly lower LDL cholesterol. No trial of eating bean sprouts for cholesterol or heart health was found, so the result cannot be assumed for sprouts. | 2 | |
| Cholesterol Balance | Not enough evidence | Cholesterol and heart health (shown for cooked pulses, not sprouts): Pooled trials of cooked beans, chickpeas, lentils and peas found slightly lower LDL cholesterol. No trial of eating bean sprouts for cholesterol or heart health was found, so the result cannot be assumed for sprouts. | 2 | |
| Blood Sugar Balance | Not enough evidence | Blood sugar (shown for cooked legumes; lab test only for lentil sprouts): A review of 18 trials of cooked legumes found effects on blood sugar only in people with type 2 diabetes, and rated the evidence very low. A test-tube study of lentil sprouts predicted a lower glycemic index after germination, but that is not a study in people. No trial of eating bean sprouts for blood sugar was found. | 4 11 | |
| Digestive Support | Not enough evidence | What sprouting changes in the seed (digestibility and antinutrients, lab findings): Lab studies and a review say germination raises protein digestibility and lowers antinutrients such as phytic acid and tannins. These are food-chemistry results. They do not show a health benefit in people who eat sprouts. | 6 8 | |
| Balanced Nutrition | Not enough evidence | What sprouting changes in the seed (digestibility and antinutrients, lab findings): Lab studies and a review say germination raises protein digestibility and lowers antinutrients such as phytic acid and tannins. These are food-chemistry results. They do not show a health benefit in people who eat sprouts. | 6 8 | |
| Cellular Protection | Not enough evidence | Antioxidant compounds (test-tube measures only): In the lentil lab study, phenolic compounds and test-tube antioxidant measures rose after sprouting. No study shows that these compounds act in people who eat sprouts. | 6 |
B. Body systems
| Connected to | Kind of connection | Evidence status | Context | Studies |
|---|---|---|---|---|
| Nutrition | Biological association | High certainty | Studied for: Vitamins and minerals in a low-calorie food (nutrient content) Studied for: What sprouting changes in the seed (digestibility and antinutrients, lab findings) | 23 22 6 8 |
| Cardiovascular System | Biological association | Not enough evidence | Studied for: Cholesterol and heart health (shown for cooked pulses, not sprouts) | 2 |
| Endocrine System | Biological association | Not enough evidence | Studied for: Blood sugar (shown for cooked legumes; lab test only for lentil sprouts) | 4 11 |
| Digestive System | Biological association | Not enough evidence | Studied for: What sprouting changes in the seed (digestibility and antinutrients, lab findings) | 6 8 |
| Whole Body | Biological association | Not enough evidence | Studied for: Antioxidant compounds (test-tube measures only) | 6 |
E. Health conditions
| Connected to | Kind of connection | Evidence status | Context | Studies |
|---|---|---|---|---|
| Food poisoning | Adverse effect or risk | Documented risk | The FDA and CDC say raw or lightly cooked sprouts can carry Salmonella, Listeria and E. coli. Raw or lightly cooked sprouts can carry Salmonella, Listeria and E. coli. Preparation or compound: Raw or lightly cooked sprouts |
16 14 13 3 |
| Salmonella infections | Adverse effect or risk | Documented risk | Outbreaks (UK 1988; Germany and the Netherlands 2011) were linked to raw mung bean sprouts. Outbreaks were linked to raw mung bean sprouts (UK 1988; Germany and the Netherlands 2011). Preparation or compound: Raw mung bean sprouts |
15 3 10 |
| Escherichia coli infections | Adverse effect or risk | Documented risk | A large 2011 German E. coli outbreak was linked to sprouts. Preparation or compound: Raw sprouts |
5 |
I. Biomarkers
| Connected to | Kind of connection | Evidence status | Context | Studies |
|---|---|---|---|---|
| LDL cholesterol | Biological association | Not enough evidence | Measured in trials: not studied in sprouts (lowered slightly with cooked pulses). A lab change is not the same as a health benefit. | 2 |
| Fasting blood glucose | Biological association | Very low certainty | Measured in trials: mixed. A lab change is not the same as a health benefit. | 4 |
K. Biological pathways
| Connected to | Kind of connection | Evidence status | Context | Studies |
|---|---|---|---|---|
| Vitamin K | Preliminary mechanism | Human | Sprouts contain vitamin K, which is needed for blood clotting and matters for people taking warfarin. | 20 23 |
| Folate | Preliminary mechanism | Human | Raw mung and lentil sprouts hold folate; folate is needed for cell growth. | 23 22 |
| Vitamin C | Preliminary mechanism | Human | Raw mung and lentil sprouts hold vitamin C. | 23 22 |
L. Active compounds
| Connected to | Kind of connection | Evidence status | Context | Studies |
|---|---|---|---|---|
| Vitamin K (phylloquinone) | Biological association | Nutrient data | Needed for blood clotting. Foods with vitamin K matter for people on warfarin (MedlinePlus). Preparation or compound: Sprout |
23 20 |
| Folate (DFE) | Biological association | Nutrient data | A B vitamin needed for cell growth. No trial of folate from sprouts was read. Preparation or compound: Sprout |
23 22 |
| Vitamin C | Biological association | Nutrient data | A vitamin. Lab germination studies report that vitamin C appears or rises when seeds sprout, but shop sprouts differ from lab sprouts. Preparation or compound: Sprout |
23 22 |
| Protein | Biological association | Nutrient data | A source of plant protein. Lentil sprouts hold nearly three times as much per 100 g as mung sprouts, because mung sprouts are mostly water. Preparation or compound: Sprout |
23 22 |
| Phenolic compounds | Biological association | In vitro | Antioxidant in the test tube. Not shown to act in people who eat sprouts. Preparation or compound: Sprout |
6 |
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 26, 2026).
Evidence at a glance: what changed in 1 lab markers
Tap a number to show only those markers. Counts are markers, not people.
The evidence
The research centre for Bean Sprouts. Every record here was checked against PubMed or the publisher's page; we never list a study we have not verified.
Evidence by outcome
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 started from our existing bean sprouts summary, read the FDA, CDC, MedlinePlus and NHS pages and a CDC journal review, searched PubMed for outbreak reports, retail surveys, reviews and trials, and checked plant names against GBIF. Only abstracts were read for studies. Items we could not verify are flagged in the research gaps.
Study library: every study we checked 23
| Study | Design | People | Product, dose, length | Result |
|---|---|---|---|---|
| Abu Risha 2024 Legume Allergens Pea, Chickpea, Lentil, Lupine and Beyond Curr Allergy Asthma Rep · PMID 38990406 · DOI |
Narrative review n/a |
Review of allergens in legumes other than peanut and soy (no participants) | Legumes (beans, pea, lentils, chickpea, lupine, cowpea, pigeon pea, fenugreek) Seeds as food |
The review says these legumes, including lentils, can cause mild to severe allergic reactions, that severe reactions are described for peas and lupine, and that most reactions come from cross-reaction between similar proteins (for example peanut and lupine). Most studies are case reports. The abstract does not name mung bean or sprouts. Not applicable (Not applicable) Methods, limits and fundingOutcomes: Legume allergen sources and cross-reactions Limitations: Narrative review; the abstract does not say whether sprouts behave like the dry seed. Funding and conflicts: Funding is not stated in the abstract. Read: abstract |
| Back 2026 Effect of Different Types of Whole Dietary Pulses on Established Therapeutic Lipid Targets for Cardiovascular Risk Reduction: An Updated Systematic Review and Dose-Response Meta-Analysis of Randomized Controlled Trials J Am Heart Assoc · PMID 42132198 · DOI |
Systematic review meta analysis |
2095 2,095 adults in 38 randomised trials (52 comparisons) |
Whole dietary pulses (beans, chickpeas, lentils and dried peas) eaten cooked, not sprouts Mature pulses as food Median 130 g/day (trial detail, not advice) Median 6 weeks; trials of at least 3 weeks · vs Diets without pulses |
Whole pulses lowered LDL cholesterol, non-HDL cholesterol and apoB, and slightly lowered HDL cholesterol. Results were similar across pulse types. The reviewers rated certainty moderate to high for all outcomes except apoB (very low). LDL mean difference -0.14 mmol/L; non-HDL -0.22 mmol/L; apoB -0.08 g/L; HDL -0.03 mmol/L (LDL -0.19 to -0.08; non-HDL -0.30 to -0.14; apoB -0.13 to -0.03; HDL -0.05 to -0.01) Methods, limits and fundingOutcomes: LDL cholesterol (primary), non-HDL cholesterol, apolipoprotein B, HDL cholesterol Limitations: Mature, cooked pulses. The abstract does not mention sprouts. LDL is a blood marker, not heart attacks. Funding and conflicts: Registered at PROSPERO CRD42023432826. The PubMed record lists research support from non-US government sources; other funding was not read. Registration: PROSPERO CRD42023432826 Read: abstract |
| Bayer 2014 An outbreak of Salmonella Newport associated with mung bean sprouts in Germany and the Netherlands, October to November 2011 Euro Surveill · PMID 24434173 |
Case control outbreak investigation |
50 106 cases in Germany and 20 in the Netherlands; case-control of 50 Salmonella Newport cases and 45 Salmonella Enteritidis comparison cases |
Raw or insufficiently cooked mung bean sprouts Sprouts October to November 2011 · vs Salmonella Enteritidis cases |
Only sprout eating was significantly linked to S. Newport infection. Germ fingerprints of the human cases matched a mung bean sprout sample, and trace-back led to a sprout producer in the Netherlands. The authors say eating raw or insufficiently cooked sprouts may be a health risk. Odds ratio 18.4 (95% CI 2.2 to 150.2) Methods, limits and fundingOutcomes: Food linked to Salmonella Newport infection Limitations: A wide confidence interval (small study). The abstract gives no figure for how often sprouts are contaminated. Foods were recalled by cases. Funding and conflicts: Funding is not stated in the abstract. Read: abstract |
| Bielefeld 2020 The Effects of Legume Consumption on Markers of Glycaemic Control in Individuals with and without Diabetes Mellitus: A Systematic Literature Review of Randomised Controlled Trials Nutrients · PMID 32708949 · DOI |
Systematic review |
18 randomised trials of at least 6 weeks (5 in type 2 diabetes, 12 without diabetes, 1 in prediabetes) | Legumes eaten as food (cooked), not sprouts Mature legumes as food At least 6 weeks per trial · vs Control diets |
Only the five trials in people with type 2 diabetes reported significant effects (for example lower fasting glucose in three). The reviewers rated the overall quality of evidence very low. Not pooled (Not given) Methods, limits and fundingOutcomes: Fasting glucose, fasting insulin, HbA1c, HOMA-IR, 2-hour glucose Limitations: Evidence quality very low. Cooked legumes, not sprouts. Funding and conflicts: Funding is not stated in the abstract. Read: abstract |
| Buchholz 2011 German outbreak of Escherichia coli O104:H4 associated with sprouts N Engl J Med · PMID 22029753 · DOI |
Case control and cohort outbreak investigation |
26 people with hemolytic-uremic syndrome and 81 controls; a restaurant cohort of 152 people (May 2011, Germany) | Sprouts (the abstract does not name the seed type) served raw in meals Sprouts Single outbreak, 2011 |
Sprout eating was linked to the illness. In the restaurant study 31 of 152 people (20%) became ill, and those served sprouts were much more likely to be ill. Trace-back led to one sprout producer. The outbreak strain was not found on seeds from the implicated lot. Case-control matched odds ratio 5.8; restaurant cohort relative risk 14.2 (Odds ratio 95% CI 1.2 to 29; relative risk 95% CI 2.6 to infinity) Methods, limits and fundingOutcomes: Source of a large outbreak of Shiga-toxin-producing E. coli O104:H4 and hemolytic-uremic syndrome Limitations: The abstract does not say which seed the sprouts were grown from. Recall of food eaten can be wrong. An outbreak is not a measure of how often ordinary sprouts are unsafe. Funding and conflicts: Funding is not stated in the abstract. Read: abstract |
| Fouad 2015 Effect of germination time on proximate analysis, bioactive compounds and antioxidant activity of lentil (Lens culinaris Medik.) sprouts Acta Sci Pol Technol Aliment · PMID 28068031 · DOI |
Laboratory study in-vitro |
Lentil seeds germinated for 3 to 6 days in the lab (no people) | Lentil sprouts Sprouts 3, 4, 5 and 6 days · vs Raw (ungerminated) lentil seeds |
Sprouting raised moisture, protein, crude fibre and free amino acids and lowered tannins and phytic acid. Phenolics rose from 1341 mg/100 g dry weight in raw seeds to as much as 1630 mg/100 g after 5 days. Antioxidant test-tube results were higher in sprouts. Phenolics 1341 to 1411-1630 mg/100 g DW (Not given) Methods, limits and fundingOutcomes: Nutrient content, tannins, phytic acid, phenolics and antioxidant tests Limitations: Lab chemistry of home-style germination of dried seed; not the same as sprouts bought in a shop; no human outcome. Funding and conflicts: Funding is not stated in the abstract. Read: abstract |
| Iacumin 2019 Microbial quality of raw and ready-to-eat mung bean sprouts produced in Italy Food Microbiol · PMID 31027796 · DOI |
Laboratory survey and inoculation experiment n/a |
Mung bean sprouts from Italian production over five years, plus seeds deliberately inoculated with germs in the lab | Mung bean sprouts, with and without a chlorinated wash Seeds and sprouts Five years of production monitoring; 3-day sprouting experiment · vs Unwashed versus chlorinated wash |
No disease-causing germs were found in the Italian production samples over five years. In the lab, when seeds were deliberately inoculated, the germs grew by 5 to 6 log CFU/g within 3 days of sprouting. A chlorinated wash cut germs by about 3 log CFU/g in seeds and about 7 log CFU/g in sprouts, but could not remove them completely. Growth 5-6 log CFU/g in 3 days; wash reduction about 3 log (seeds) and 7 log (sprouts) CFU/g (Not given in the abstract) Methods, limits and fundingOutcomes: Disease-causing germs (STEC, Salmonella, Listeria), coliforms and total counts Limitations: One producer system in one country. The inoculation was done in the lab, not on a farm. It shows that good production can give clean sprouts, and that germs cannot be fully washed off once present. Funding and conflicts: Funding is not stated in the abstract. Read: abstract |
| Janahar 2026 Nutritional and Functional Attributes of Legumes: A Review of Processing Methods and Their Impacts J Food Sci · PMID 42494153 · DOI |
Narrative review n/a |
Review of how processing changes legumes (no participants) | Legumes: soaking, germination, fermentation, heating Seeds |
The review says germination improves protein digestibility and the availability of micronutrients, soaking can raise soluble fibre by up to 33% while some minerals leach into the water, and heating neutralises heat-sensitive antinutrients but can cut antioxidant capacity by 50 to 95%. No single method gives every benefit. Not applicable (Not applicable) Methods, limits and fundingOutcomes: Effects of processing on nutrients and antinutrients Limitations: A narrative review of processing, not a human trial; sprouts as sold are not singled out. Funding and conflicts: Funding is not stated in the abstract. Read: abstract |
| Li 2024 Discrimination of untreated and sodium sulphite treated bean sprouts by Fourier transform infrared spectroscopy and chemometrics Food Addit Contam Part A Chem Anal Control Expo Risk Assess · PMID 38648105 · DOI |
Laboratory method study n/a |
168 168 batches of black bean, soybean and mung bean sprouts, with or without sulphite |
Sprouts soaked in sodium sulphite versus not soaked Sprouts · vs Non-immersed sprouts |
The abstract says bean sprouts are commonly treated with sulphites to keep them fresh longer, and that the authors earlier found sulphite soaking might turn natural compounds into sulphur-containing ones that can affect quality and safety. The paper itself tests an infrared detection method (accuracy 82 to 95% depending on the model) and measures no health outcome. Method accuracy 95% (best model) (Not given) Methods, limits and fundingOutcomes: Whether a lab method can tell sulphite-treated sprouts from untreated ones Limitations: A method paper. It does not measure sulphite left on shop sprouts or any effect on people. Funding and conflicts: Funding is not stated in the abstract. Read: abstract |
| Sadler-Reeves 2016 The occurrence of Salmonella in raw and ready-to-eat bean sprouts and sprouted seeds on retail sale in England and Northern Ireland Lett Appl Microbiol · PMID 26661563 · DOI |
Laboratory survey n/a |
554 554 retail samples of bean sprouts or sprouted seeds, England and Northern Ireland, January to March 2011 |
Retail bean sprouts and sprouted seeds tested for Salmonella Sprouts (raw or ready to eat) 100 g samples Single survey |
Salmonella was found in 4 samples (0.7%). All four were mung bean sprouts and all four were the same type (Salmonella Abaetetuba). Two of the four were sold as ready to eat (labelled rinse and serve only). 4 of 554 samples (0.7%) positive (Not given) Methods, limits and fundingOutcomes: Presence of Salmonella Limitations: One country, one season, one year (2011). A survey of the product, not of illness. Most samples had no Salmonella. Funding and conflicts: Funding is not stated in the abstract. Read: abstract |
| Swieca 2013 In vitro digestibility and starch content, predicted glycemic index and potential in vitro antidiabetic effect of lentil sprouts obtained by different germination techniques Food Chem · PMID 23411262 · DOI |
Laboratory study in-vitro |
Lentil sprouts grown in the lab (no people) | Lentil sprouts germinated under different conditions Sprouts Germinated 3 to 6 days · vs Ungerminated or control sprouts |
On germination, the lentil starch content, enzyme-blocking activity and predicted glycemic index values went down. The values depended on how the sprouts were grown. The authors say sprouting conditions can change starch and its predicted glycemic index. Not applicable (Not applicable) Methods, limits and fundingOutcomes: Starch content and predicted glycemic index by test-tube digestion Limitations: Test-tube study. A predicted glycemic index is not blood sugar in people. Funding and conflicts: Funding is not stated in the abstract. Read: abstract |
| Trzaskowska 2019 Pathogen reduction on mung bean reduction of Escherichia coli O157:H7, Salmonella enterica and Listeria monocytogenes on mung bean using combined thermal and chemical treatments with acetic acid and hydrogen peroxide Food Microbiol · PMID 30166191 · DOI |
Laboratory experiment n/a |
Mung bean seeds deliberately inoculated with E. coli O157:H7, Salmonella and Listeria | Mild heat then acetic acid and/or hydrogen peroxide on seed Seeds (before sprouting) Lab treatments, eight combinations Immediately and after 4 weeks storage · vs Untreated seed |
Every combined treatment cut each germ by at least 3 log CFU/g on freshly inoculated seed. After four weeks of storage, hot water followed by hydrogen peroxide and acetic acid gave more than a 3 log reduction. The abstract describes mung bean sprouts as implicated in several outbreaks worldwide. At least 3 log CFU/g reduction (Not given in the abstract) Methods, limits and fundingOutcomes: Reduction of germs on seed, and germination Limitations: Lab seed treatment for the sprout industry, not something a home cook can copy. A 3 log cut means about a thousand-fold; germs can still remain. Funding and conflicts: Funding is not stated in the abstract. Read: abstract |
| Xavier 2025 Understanding food safety on sprouts and microgreens: Contamination routes, outbreaks and challenges Food Res Int · PMID 40467198 · DOI |
Narrative review n/a |
Review of contamination of sprouts and microgreens (no participants) | Sprouts and microgreens (not specific to mung beans) Sprouts |
The review says sprout growing conditions (high humidity and plenty of nutrients) favour Salmonella enterica, E. coli and Listeria monocytogenes. Many decontamination treatments reduce germs, but viruses and long-term effectiveness remain a challenge. Not applicable (Not applicable) Methods, limits and fundingOutcomes: Contamination routes, outbreaks and decontamination Limitations: A review of sprouts and microgreens in general; the abstract does not name bean sprouts. Funding and conflicts: Funding is not stated in the abstract. Read: abstract |
| s-cdc-2014-clover CDC (archived page): 2014 E. coli outbreak linked to raw clover sprouts, advice to consumers · Source |
Health agency n/a |
Methods, limits and fundingRead: full-text | ||
| s-eid-1999 Taormina PJ, Beuchat LR, Slutsker L: Infections associated with eating seed sprouts: an international concern (Emerg Infect Dis 1999;5(5):626-634) · Source |
Review journal article n/a |
Methods, limits and fundingRead: full-text | ||
| s-fda-produce FDA: Selecting and Serving Produce Safely · Source |
Health agency n/a |
Methods, limits and fundingRead: full-text | ||
| s-fda-risk FDA: People at Risk of Foodborne Illness · Source |
Health agency n/a |
Methods, limits and fundingRead: full-text | ||
| s-gbif-lens-culinaris GBIF Backbone: Lens culinaris Medik. (usageKey 5350010) -> Vicia lens (accepted key 3973001) · Source |
Reference database n/a |
Methods, limits and fundingRead: full-text | ||
| s-gbif-vigna-radiata GBIF Backbone: Vigna radiata (L.) R.Wilczek (usageKey 2982380) · Source |
Reference database n/a |
Methods, limits and fundingRead: full-text | ||
| s-medlineplus-vitk MedlinePlus: Vitamin K · Source |
Health agency n/a |
Methods, limits and fundingRead: full-text | ||
| s-nhs-avoid NHS: Foods to avoid in pregnancy · Source |
Health agency n/a |
Methods, limits and fundingRead: full-text | ||
| s-usda-168427 USDA FoodData Central: Lentils, sprouted, raw (FDC 168427) · Source |
Reference database n/a |
Methods, limits and fundingRead: full-text | ||
| s-usda-169957 USDA FoodData Central: Mung beans, mature seeds, sprouted, raw (FDC 169957) · Source |
Reference database n/a |
Methods, limits and fundingRead: full-text |
What we do not know yet
- No trial of eating bean sprouts was found for cholesterol, blood sugar, weight, immunity, cancer or any other health outcome.
- The heart and blood sugar evidence is about cooked beans and lentils; whether sprouts act the same way is not known.
- Current CDC sprout wording could not be read (the site refused the request), so an archived 2014 CDC page was used.
- No cooking time or temperature for sprouts was found, and the FDA does not define 'lightly cooked'.
- Breastfeeding, sulphite residues and sulphite sensitivity, lectins in sprouts and risk of illness per serving were not researched or found.
How new research is added
New studies are found by a saved PubMed search and placed in a review queue before the page changes.
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
Not studied in sprouts (lowered slightly with cooked pulses) in trials
The 'bad' cholesterol carried in the blood. Higher levels are linked to more heart disease.
Not enough evidenceResults and what it means
Why it was measured
It is the usual blood marker used in diet trials for heart risk.
Statistical vs. clinical meaning
A small fall in a blood marker from cooked pulses. It does not show that sprouts do the same, and it does not show fewer heart attacks.
Safety implication
None specific.
| Study | Result | People | Product |
|---|---|---|---|
| 2 | LDL -0.14 mmol/L (95% CI -0.19 to -0.08); non-HDL -0.22 (-0.30 to -0.14); apoB -0.08 g/L (-0.13 to -0.03); HDL -0.03 (-0.05 to -0.01) | 2,095 adults in 38 trials | Whole cooked dietary pulses (beans, chickpeas, lentils, dried peas), median 130 g/day, median 6 weeks; not sprouts |
Other 1
Fasting blood glucose
Mixed results in trials
Blood sugar level after not eating for several hours.
Very low certaintyResults and what it means
Why it was measured
It is a standard blood marker for diabetes control in diet trials.
Statistical vs. clinical meaning
Evidence is for cooked legumes in people with type 2 diabetes and is rated very low. Nothing shows the same for bean sprouts.
Safety implication
Ask your clinic before diet changes if you take diabetes medicine.
| Study | Result | People | Product |
|---|---|---|---|
| 4 | Only trials in type 2 diabetes reported significant effects (three reported lower fasting glucose); the reviewers rated the evidence very low | 18 randomised trials (5 in type 2 diabetes, 12 without diabetes, 1 in prediabetes) | Cooked legumes for at least 6 weeks; not sprouts |
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 5
- DANGER FIRST: raw and lightly cooked bean sprouts can cause food poisoning (Salmonella, E. coli, Listeria). The FDA says sprouts, such as alfalfa or mung bean, that are served raw or lightly cooked may contain bacteria that cause foodborne illness. Sprouts are grown from seeds under warm, humid conditions that are also ideal for Salmonella, Listeria and E. coli. If just a few bacteria are on or in the seed, they can grow to high levels during sprouting, even when you grow sprouts at home under clean conditions. A CDC journal review (1999) says germs can pass 10 million per gram of sprouts without changing how the sprouts look. Real outbreaks include Salmonella in mung bean sprouts in the UK (1988) and in Germany and the Netherlands (2011, 126 cases), and a large E. coli outbreak in Germany in 2011 tied to sprouts. Authoritative guidance 16 15 3 5
- Who should avoid raw or lightly cooked sprouts: children, older adults, pregnant women and people with weak immune systems. The FDA says people who are more vulnerable to foodborne illness (children, older adults, pregnant women, and people with weak immune systems such as transplant patients and people with HIV/AIDS, cancer or diabetes) should avoid raw or lightly cooked sprouts of any kind, and names mung bean sprouts. Its list of foods to avoid for higher-risk people includes raw sprouts (alfalfa, bean or any other sprout). The FDA says foodborne illness in pregnancy can lead to miscarriage, premature delivery, stillbirth, illness or death of a newborn, and that children under 5 have a high risk. An archived CDC page (2014) gives the same advice, also naming mung bean sprouts. Authoritative guidance 16 17 14
- Home sprouting, rinsing and washing do not remove the risk. The FDA says germs can grow to high levels even in home sprouting under sanitary conditions, and that washing produce reduces bacteria but does not eliminate them. The CDC journal review says chlorine and other seed and sprout disinfectants fail to eliminate germs. A 2019 Italian study found no disease-causing germs in five years of production samples, but when seeds were deliberately contaminated the germs grew 5 to 6 log CFU/g in 3 days and a chlorinated wash could not remove them completely. A 2016 survey found Salmonella in 4 of 554 retail sprout samples (0.7%), all mung bean sprouts, including two sold as ready to eat. You cannot tell by looking. Observational 16 15 7 10
- Cooking: the FDA and CDC say cooking sprouts thoroughly kills harmful bacteria. The FDA says cooking produce thoroughly kills harmful bacteria and reduces the risk of illness. The archived CDC page says cooking sprouts thoroughly kills any harmful bacteria. Neither source read gives a time or temperature for sprouts, so this page gives none. The FDA warns about 'lightly cooked' sprouts but does not define the term. If you are in a higher-risk group, ask your doctor or midwife before eating sprouts in any form. Authoritative guidance 16 14
- Warfarin: sprouts contain vitamin K, so keep your intake steady. MedlinePlus says vitamin K and foods that contain it can affect how warfarin works, and that people on warfarin should keep their vitamin K intake steady from day to day. Raw mung bean sprouts are a vitamin K food (see the Science tab for the USDA figure). Tell your clinic if you start or stop eating sprouts regularly. Authoritative guidance 20 23
Side effects 4
| Effect | How often | Severity and recovery | Evidence |
|---|---|---|---|
| Food poisoning: nausea, vomiting, diarrhea (may be bloody), abdominal pain, fever, headache and body ache The FDA says symptoms usually appear within 1 to 3 days but can start within 20 minutes or up to 6 weeks later (produce page); its at-risk page says usually 12 to 72 hours, from 30 minutes to 4 weeks. | Most sprouts sold are not contaminated (4 of 554 retail samples had Salmonella in one survey), but when contaminated the illness can be serious. No overall frequency of illness per serving was found. | can be severe, including hospitalisation Most healthy people recover; the FDA says some develop chronic, severe or life-threatening problems | Authoritative guidance 16 17 10 |
| Hemolytic-uremic syndrome (kidney and blood complication) after E. coli O104:H4 infection in a 2011 German outbreak The abstract says sprouts were the most likely vehicle; it does not name the seed type, so this is evidence about sprouts as a food group, not specifically mung bean sprouts. | 26 people with the syndrome were studied in the case-control part; the outbreak was large | serious Not stated in the abstract | Observational 5 |
| Pregnancy complications from foodborne illness (miscarriage, premature delivery, stillbirth, illness or death of a newborn) The FDA describes this for foodborne illness in pregnancy in general, and lists raw sprouts among foods to avoid. | No frequency given | serious Not applicable | Authoritative guidance 17 |
| Allergic reaction to legumes (mild to severe) A review says legumes such as lentils can cause allergic reactions and most reports are case reports; its abstract does not name mung beans or sprouts. | No frequency found for sprouts | mild to severe Not stated | Narrative review 1 |
Liver
No liver injury from eating bean sprouts was found. A liver-safety source (such as LiverTox) was not searched for this food page.
How often. No frequency was found.
Monitoring. No agency monitoring advice was found.
This is a safety connection. It is not evidence that Bean Sprouts supports liver health.
Medicines and supplements 2
| With | Why it matters | Importance | Evidence | What to do |
|---|---|---|---|---|
| Warfarin (a blood thinner) prescription | Vitamin K helps blood clot, so a big change in vitamin K intake can change how warfarin works. Raw mung bean sprouts contain vitamin K. | MedlinePlus states the general rule for vitamin K foods. No study of bean sprouts with warfarin was read, so the size of the effect for sprouts is not known. | Authoritative guidance Low certainty 20 23 | Keep vitamin K foods steady and tell your anticoagulant clinic about big changes in your diet. Do not change a prescribed medicine on your own. |
| Medicines and treatments that weaken the immune system (for example transplant medicines and some cancer treatments) prescription | The FDA says the immune systems of transplant patients and people with certain illnesses are often weakened by the disease and by the side effects of some treatments, which raises the risk of infections such as foodborne illness. | This is a risk from germs on raw sprouts, not a chemical interaction. The FDA's advice is to avoid raw or lightly cooked sprouts. | Authoritative guidance Moderate certainty 17 16 | If you take medicine that lowers immunity, ask your care team about raw sprouts. The FDA's advice is to avoid them. |
Who should check first 3
| Situation | Advice | Evidence |
|---|---|---|
| Higher-risk groups: pregnancy, children under 5, older adults, and people with cancer, diabetes, HIV/AIDS, organ transplants or autoimmune disease | The FDA and CDC advice is to avoid raw or lightly cooked sprouts of any kind. Ask your doctor or midwife whether thoroughly cooked sprouts are right for you. | Authoritative guidance 16 17 14 |
| Known or suspected legume allergy (peanut, soy, lentil, other beans) | Ask an allergist before eating bean or lentil sprouts. For trouble breathing or swelling of the face or throat, call emergency services. | Narrative review 1 |
| Taking warfarin | Not a ban. Keep your intake of sprouts steady and tell your clinic about changes. | Authoritative guidance 20 |
Overdose, product quality and regulators
Summary. No toxicity from the sprout itself was found in the sources read. The documented danger is contamination with germs. Antinutrients and lectins in sprouts were not researched.
Animal. Not reviewed.
Human doses studied. No trial of eating bean sprouts was found.
Overdose response. Not found.
Genotoxicity. Not researched.
Toxic or hazardous parts. Not researched. Whether the lectin warning for raw dried beans applies to sprouts was not found in the sources read.
Germ contamination is the main safety issue. The seed can carry germs, sprouting conditions let them multiply, and outbreaks have been traced to sprouts. Pesticide residues, heavy metals and mould toxins were not researched.
Outbreak: Salmonella Newport in mung bean sprouts (Germany and the Netherlands, 2011). 106 cases in Germany and 20 in the Netherlands. Sprout eating was the only food significantly linked to illness (odds ratio 18.4, 95% CI 2.2 to 150.2); germ fingerprints of cases matched a mung bean sprout isolate and trace-back led to one Dutch producer. 3
Outbreak: E. coli O104:H4 and sprouts (Germany, 2011). In a restaurant study, 31 of 152 people (20%) became ill and those served sprouts were far more likely to be ill (relative risk 14.2, 95% CI 2.6 to infinity). Sprouts from one producer explained all 41 case clusters with known trading links. The outbreak strain was not found on seeds from the implicated lot. The abstract does not name the seed type. 5
Retail survey: Salmonella in sprouts (England and Northern Ireland, 2011). 4 of 554 samples (0.7%) were positive; all four were mung bean sprouts, two sold as ready to eat ('rinse and serve'). 10
Earlier history: UK 1988 and Thai survey. The 1999 CDC journal review records a 1988 Salmonella outbreak in the UK linked to raw mung bean sprouts, and a Thai retail survey with Salmonella in 8.7% of mung bean sprout samples. 15
Clean production exists, but cannot be seen. An Italian study found no disease-causing germs in mung bean sprouts over five years of production monitoring. The same study shows germs grow fast if present on the seed and cannot be fully washed off. 7
Seed treatments used by industry. A lab study found that mild heat followed by hydrogen peroxide and acetic acid cut germs on mung bean seed by at least 3 log CFU/g (about a thousand-fold), and a 2025 review says viruses and long-term effectiveness are still a challenge. 12 13
Sulphite soaking. A 2024 method paper says bean sprouts are commonly treated with sulphites to keep them fresh, and that soaking might change natural compounds. It measured no health outcome and no residue on shop sprouts. People sensitive to sulphites may wish to ask their clinician; sulphite sensitivity was not researched here. 9
| Body | Action | Date |
|---|---|---|
| FDA (US) (United States) | Sprouts (such as alfalfa or mung bean) served raw or lightly cooked may carry bacteria; people who are more vulnerable to foodborne illness should avoid raw or lightly cooked sprouts of any kind, including mung bean; cooking produce thoroughly kills harmful bacteria source | 2024-03-05 |
| FDA (US) (United States) | People at Risk of Foodborne Illness: higher-risk people are advised to avoid raw sprouts (alfalfa, bean or any other sprout) source | 2025-01-16 |
| CDC (US), archived 2014 outbreak page (United States) | Children, older adults, pregnant women and people with weak immune systems should avoid raw sprouts of any kind including mung bean; cook sprouts thoroughly source | 2014-08-01 |
| MedlinePlus (US National Library of Medicine) (United States) | Vitamin K: foods with vitamin K can affect how warfarin works; keep intake steady day to day source | 2025-01-21 |
| NHS (UK) (United Kingdom) | Foods to avoid in pregnancy: the page does not mention sprouts source | 2026-06-15 |
When to get medical help
- Bloody diarrhea, high fever, severe belly pain, repeated vomiting, or being unable to keep fluids down after eating sprouts: contact a doctor or urgent care the same day. The FDA says to contact your healthcare provider immediately if you think you have a foodborne illness.
- Pregnant, over 65, a young child, or with a weak immune system and any fever, vomiting or diarrhea after raw sprouts: call your doctor or midwife right away.
- Very little urine, extreme tiredness, or paleness after bloody diarrhea (a possible kidney complication; hemolytic-uremic syndrome was the serious illness in the 2011 German outbreak): get urgent medical care.
- Trouble breathing, swelling of the lips, face or throat, or widespread hives soon after eating legumes or sprouts: call emergency services (possible severe allergy).
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
Are raw bean sprouts safe to eat?
They carry a real food-poisoning risk. The FDA says raw or lightly cooked sprouts may contain bacteria such as Salmonella, Listeria and E. coli, and that a few germs on the seed can grow to high levels while it sprouts. Outbreaks have been tied to raw mung bean sprouts. Most sprouts on sale are not contaminated, but you cannot tell by looking.
Who should avoid raw bean sprouts?
The FDA says children, older adults, pregnant women, and people with weak immune systems (for example transplant patients and people with HIV/AIDS, cancer or diabetes) should avoid raw or lightly cooked sprouts of any kind, including mung bean sprouts. An archived CDC page gives the same advice.
Are bean sprouts safe in pregnancy?
The FDA lists pregnant women among those who should avoid raw or lightly cooked sprouts, and says foodborne illness in pregnancy can lead to miscarriage, premature delivery or stillbirth. The NHS pregnancy foods page we read does not mention sprouts. Ask your midwife or doctor, including about thoroughly cooked sprouts.
Does cooking make bean sprouts safe?
Is it safe if I grow sprouts at home or wash them well?
Not necessarily. The FDA says bacteria can grow to high levels even if you grow sprouts at home under sanitary conditions, and that washing reduces bacteria but does not eliminate them. A CDC journal review says disinfectants fail to eliminate germs, and a 2019 study found a chlorinated wash could not remove them completely once present.
Can you tell if sprouts are contaminated?
What are the signs of food poisoning from sprouts?
Nausea, vomiting, diarrhea (which may be bloody), abdominal pain, fever, headache and body ache. The FDA says symptoms usually start within 1 to 3 days but can start within 20 minutes or up to 6 weeks later. Contact your healthcare provider right away if you suspect it, and seek urgent care for bloody diarrhea, high fever or being unable to keep fluids down.
Are bean sprouts nutritious?
Do bean sprouts lower cholesterol?
Not shown. Pooled trials found cooked pulses lowered LDL cholesterol by about 0.14 mmol/L, but we found no trial of bean sprouts.
Do bean sprouts help with blood sugar or diabetes?
Not shown for sprouts. A review of cooked legume trials found effects only in type 2 diabetes and rated the evidence very low. A test-tube study of lentil sprouts predicted a lower glycemic index, which is not a result in people. If you take diabetes medicine, ask your clinic before big diet changes.
Are bean sprouts a problem if I take warfarin?
Can you be allergic to bean sprouts?
Legume allergy is possible. A 2024 review says legumes such as lentils can cause mild to severe allergic reactions, and that most reports are case reports. How common allergy to sprouts is was not found. For trouble breathing or swelling of the face or throat, call emergency services.
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Editorial transparency
- Written by
- AlternativeMed editorial team. Research compiled with AI assistance, then checked against the sources listed.
- Medical review
- None. This page has not been reviewed by a physician or pharmacist.
- First published
- 2026-10-26
- Last substantive update
- 2026-10-26
- How we research
- We started from our existing bean sprouts summary, read the FDA, CDC, MedlinePlus and NHS pages and a CDC journal review, searched PubMed for outbreak reports, retail surveys, reviews and trials, and checked plant names against GBIF. Only abstracts were read for studies. Items we could not verify are flagged in the research gaps.
- 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.
Sources 23
Each source was opened and checked. Where we read only the abstract, it says so. The small numbers in the text point here.
- Abu Risha M, Rick EM, Plum M, et al.. Legume Allergens Pea, Chickpea, Lentil, Lupine and Beyond. Curr Allergy Asthma Rep. 2024. PMID 38990406. DOI 10.1007/s11882-024-01165-7. (abstract)
- Back S, Yang S, Rossi A, et al.. Effect of Different Types of Whole Dietary Pulses on Established Therapeutic Lipid Targets for Cardiovascular Risk Reduction: An Updated Systematic Review and Dose-Response Meta-Analysis of Randomized Controlled Trials. J Am Heart Assoc. 2026. PMID 42132198. DOI 10.1161/JAHA.125.046659. (abstract)
- Bayer C, Bernard H, Prager R, et al.. An outbreak of Salmonella Newport associated with mung bean sprouts in Germany and the Netherlands, October to November 2011. Euro Surveill. 2014. PMID 24434173. (abstract)
- Bielefeld D, Grafenauer S, Rangan A. The Effects of Legume Consumption on Markers of Glycaemic Control in Individuals with and without Diabetes Mellitus: A Systematic Literature Review of Randomised Controlled Trials. Nutrients. 2020. PMID 32708949. DOI 10.3390/nu12072123. (abstract)
- Buchholz U, Bernard H, Werber D, et al.. German outbreak of Escherichia coli O104:H4 associated with sprouts. N Engl J Med. 2011. PMID 22029753. DOI 10.1056/NEJMoa1106482. (abstract)
- Fouad AA, Rehab FM. Effect of germination time on proximate analysis, bioactive compounds and antioxidant activity of lentil (Lens culinaris Medik.) sprouts. Acta Sci Pol Technol Aliment. 2015. PMID 28068031. DOI 10.17306/J.AFS.2015.3.25. (abstract)
- Iacumin L, Comi G. Microbial quality of raw and ready-to-eat mung bean sprouts produced in Italy. Food Microbiol. 2019. PMID 31027796. DOI 10.1016/j.fm.2019.03.014. (abstract)
- Janahar JJ, Balasubramaniam H, Zhang Y, et al.. Nutritional and Functional Attributes of Legumes: A Review of Processing Methods and Their Impacts. J Food Sci. 2026. PMID 42494153. DOI 10.1111/1750-3841.71318. (abstract)
- Li Y, Chen B, Ye S, et al.. Discrimination of untreated and sodium sulphite treated bean sprouts by Fourier transform infrared spectroscopy and chemometrics. Food Addit Contam Part A Chem Anal Control Expo Risk Assess. 2024. PMID 38648105. DOI 10.1080/19440049.2024.2341104. (abstract)
- Sadler-Reeves L, Aird H, de Pinna E, et al.. The occurrence of Salmonella in raw and ready-to-eat bean sprouts and sprouted seeds on retail sale in England and Northern Ireland. Lett Appl Microbiol. 2016. PMID 26661563. DOI 10.1111/lam.12530. (abstract)
- Swieca M, Baraniak B, Gawlik-Dziki U. In vitro digestibility and starch content, predicted glycemic index and potential in vitro antidiabetic effect of lentil sprouts obtained by different germination techniques. Food Chem. 2013. PMID 23411262. DOI 10.1016/j.foodchem.2012.09.122. (abstract)
- Trzaskowska M, Dai Y, Delaquis P, et al.. Pathogen reduction on mung bean reduction of Escherichia coli O157:H7, Salmonella enterica and Listeria monocytogenes on mung bean using combined thermal and chemical treatments with acetic acid and hydrogen peroxide. Food Microbiol. 2019. PMID 30166191. DOI 10.1016/j.fm.2018.04.008. (abstract)
- Xavier IB, Tavares JL, Pontes EDS, et al.. Understanding food safety on sprouts and microgreens: Contamination routes, outbreaks and challenges. Food Res Int. 2025. PMID 40467198. DOI 10.1016/j.foodres.2025.116589. (abstract)
- . CDC (archived page): 2014 E. coli outbreak linked to raw clover sprouts, advice to consumers. . . (full-text)
- . Taormina PJ, Beuchat LR, Slutsker L: Infections associated with eating seed sprouts: an international concern (Emerg Infect Dis 1999;5(5):626-634). . . (full-text)
- . FDA: Selecting and Serving Produce Safely. . . (full-text)
- . FDA: People at Risk of Foodborne Illness. . . (full-text)
- . GBIF Backbone: Lens culinaris Medik. (usageKey 5350010) -> Vicia lens (accepted key 3973001). . . (full-text)
- . GBIF Backbone: Vigna radiata (L.) R.Wilczek (usageKey 2982380). . . (full-text)
- . MedlinePlus: Vitamin K. . . (full-text)
- . NHS: Foods to avoid in pregnancy. . . (full-text)
- . USDA FoodData Central: Lentils, sprouted, raw (FDC 168427). . . (full-text)
- . USDA FoodData Central: Mung beans, mature seeds, sprouted, raw (FDC 169957). . . (full-text)
Where to buy
Check the label first. Whatever you buy, look for these:
- A recent packed-on date: very old dried beans cook unevenly
- Organic or not, and the country of origin
- Whether you want dried or canned
- Soak and cook thoroughly; some raw beans are unsafe
Talk to a pharmacist or doctor before you start any supplement, especially if you take medicines. See the Safety tab for interactions.
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