Cayenne and chili pepper: Flavor, Cooking Use and Health Facts
Cayenne and chili pepper are hot and used in sauces, stews and curries; big studies of people who eat spicy food are observational, and chili can burn the gut, skin and eyes.
Content last updated . This page has not been medically reviewed.
In the kitchen at a glance
Flavor:Hot / pungentEarthyCitrusy
Aroma: Sharp and peppery, with a mild fruity or earthy note that changes by variety.
Used in: curries, soups and stews, grilling and rubs, vegetables
Usual amount in food: USDA lists 1.8 g per teaspoon of ground cayenne; we found no source that sets a usual recipe amount.
What it is
Cayenne is the dried, ground fruit of a hot cultivar group of Capsicum annuum, in the nightshade family. [1] The word "chili" covers many hot peppers from five widely grown Capsicum species. [2] Cayenne fruits are long, thin and usually red. [1] Chili peppers were grown in the Americas for thousands of years and reached the rest of the world after Columbus. [1]Note the names. "Cayenne" is one kind of chili. "Chili powder" can be a single ground chili or a blend with cumin, garlic and onion powder, and sometimes salt. [3]
Flavor and aroma
Cayenne is hot first. Capsaicin and related compounds cause the burning feel, and heat is measured in Scoville units. Cayenne usually rates 30,000 to 50,000, a jalapeno 3,500 to 10,000 and a habanero 100,000 to 350,000. [2] Beyond heat, chilies can taste citrusy, earthy, fruity or grassy, depending on the variety. [2] The sources we read do not describe cayenne's smell in detail. Cayenne often appears as a plain, sharp heat that lets other flavors show.How it is used in cooking
Cayenne is used fresh, whole, dried or as a powder on seafood, eggs, meat, stews, casseroles, cheese dishes, curries and hot sauces. [1] In North America it is the main chili in crushed red pepper. [1] Chilies are central to Chinese (especially Sichuan), Mexican, Thai, Indian, Caribbean and many other cuisines, in dishes such as vindaloo, jerk chicken and mole. [2] Chili powder blends go into soups, tacos, fajitas, curries and American chili con carne. [3]- Fresh vs dried: chilies come fresh, dried whole, as flakes, as powder, in hot sauce and in chili oil. [2]
- Mild chilies can be cooked like bell peppers. Hotter ones are roasted or grilled briefly. [2]
- Substitutes: the sources we read give none. Kashmiri chili powder is bright red but mild, and heat differs a lot between chili powders, so taste before you swap. [3]
The sources we read do not say when to add it or whether to toast it, so we give no rules here.
Normal food amounts
| Measure | Grams | Source |
|---|---|---|
| 1 teaspoon, ground cayenne | 1.8 g | USDA [15] |
| 1 tablespoon, ground cayenne | 5.3 g | USDA [15] |
| 1 teaspoon, chili powder (blend) | 2.7 g | USDA [15] |
| Typical recipe amount | Not found | We opened no source that states one |
What one teaspoon (1.8 g) of ground cayenne provides, calculated from USDA values per 100 g:
| Nutrient | One teaspoon |
|---|---|
| Energy | about 6 kcal |
| Fiber | about 0.5 g |
| Vitamin A (RAE) | about 37 mcg |
| Vitamin E | about 0.5 mg |
| Potassium | about 36 mg |
| Vitamin C | about 1.4 mg |
The USDA SR Legacy data are from 2018, and real products vary. [15] We did not compare these numbers with official daily values, so we do not call cayenne a "good source" of anything. A pinch is mostly heat. Note that the USDA chili powder entry has about 77 mg of sodium per teaspoon, because that product is a blend. [15]
Buying, storing and preparing
- Forms: whole fresh chilies, dried chilies, flakes, ground powder, hot sauce and oil. [2]
- Mix-ups: cayenne powder may be a blend of pepper types, sometimes with no cayenne in it. [1] Chili powder may be a blend with other spices. [3]
- Dyes: some traders have illegally added harmful synthetic dyes to chili products. [2]
- Storing: one food-storage site advises a cool, dark cupboard away from heat and sunlight, with a tight lid. It says ground cayenne keeps best quality for about 3 to 4 years and slowly loses potency. [4] That is a single source and we did not find an official one. If the smell and taste are weak when you rub a pinch, replace it. [4]
- Handling: wash hands after cutting hot chilies; the oil irritates skin. [2]
Health: what research says
Eating chili in cooking is different from taking concentrated cayenne capsules or putting capsaicin products on the skin.Food amounts vs supplements
| In normal cooking | In supplements and extracts | |
|---|---|---|
| Typical amount | About 1.8 g per teaspoon (USDA); no usual amount found [15] | Capsules, powders and liquid extracts, stronger than the cooking herb [5]; skin plasters and creams with a defined capsaicin content [6] |
| What studies mostly used | Questionnaires about how often people eat spicy food, in large groups followed over years [9] | Capsaicin patches and creams on skin for pain [7][8]; capsaicin or capsinoids by mouth [5] |
| What we can say about benefit | Observational links only; they do not show that chili causes a benefit [9][10] | Strong skin patches helped some people with nerve pain; low-strength creams showed no meaningful effect [7][8] |
| Main safety limit | Burning in the gut, skin and eyes; allergy [12][13] | Burning, blisters, skin allergy; do not use on broken skin or near the eyes [6]; interactions [5] |
What the evidence shows
| Use | What the sources found | Strength of evidence | Form and population |
|---|---|---|---|
| Death from any cause or heart disease | A 2021 pooling of 4 cohort studies (564,748 adults, median 9.7 years) found 12% lower all-cause death and lower heart-disease death in regular spicy-food eaters, but not lower stroke death. The authors asked for more studies. [9] | Mixed | Food (chili pepper, sauce, oil); adults, observational |
| Overall health effects of spicy food | A 2022 review of 11 reviews called the overall effect unclear: links to lower mortality and heart disease, and to esophageal, gastric and gallbladder cancer. [10] | Mixed | Food; observational |
| Digestive-tract cancers | A 2022 pooling of 14 case-control studies found high chili intake linked to higher risk of GI cancers overall (OR 1.64, interval 1.00 to 2.70) and esophageal cancer (OR 2.71); no clear link for gastric or colorectal cancer. [11] | Mixed | Food; case-control studies, which cannot prove cause |
| Stomach symptoms | A 2010 review said a single chili dose can worsen pain and burning in dyspepsia and irritable bowel syndrome, while long-term chili intake improved dyspepsia and reflux symptoms in small randomized studies. [12] | Mixed | Food or capsaicin; small studies |
| Nerve pain (skin) | A 2017 Cochrane review (8 studies, 2,488 people) found about 10% more people much improved with an 8% prescription patch than with a low-dose comparison patch. [7] A 2012 review of 0.075% creams found no meaningful effect beyond placebo cream. [8] | Promising but limited (patch); No good evidence of benefit (low-strength cream) | Skin products, adults with nerve pain |
| Muscle pain such as low back pain | The EU regulator accepts defined capsaicin plasters and creams as well-established use for relief of muscle pain. [6] | Established | Skin plasters and creams, adults |
| Weight, appetite, blood pressure | MSK says capsaicin effects on appetite and calorie burning were described as small, and a systematic review found no effect on blood pressure or heart rate. [5] | Insufficient evidence | Mostly capsaicin or capsinoids, not cooking amounts |
| Cancer, in the lab | MSK reports lab and animal studies showing both harmful and protective effects on tumor cells. [5] | Lab or animal only | Cells and animals |
For supplement forms, skin products and interactions in depth, see the full herb guide: Cayenne pepper. For chili as a food in more detail, see black pepper, cayenne and capsaicin foods.
Official statements
- EMA/HMPC (EU), 2015: an herbal monograph accepts defined capsicum plasters and semi-solid products for relief of muscle pain as well-established use, with contraindications for broken skin and allergy to capsaicin sources. [6]
- MSK (US): states that cayenne supplements are stronger than culinary amounts and may interact with medicines. [5]
- FDA, EFSA, WHO: we did not open a statement from these bodies on cayenne or chili for this page.
Related pages
Health connections for Cayenne and chili pepper
What research links to this spice, and how strong the evidence is. Most studies use concentrated extracts or doses far above what you eat; each card says which.
Pain relief on the skin (muscle pain)
Clinically supportedThe EU regulator accepts defined capsaicin plasters and creams as well-established use for relief of muscle pain such as low back pain.
Supplements: Skin products only (plasters, creams with defined capsaicinoid content); not a finding for chili in food or capsules.
Chronic nerve pain (high-strength skin patch)
Preliminary or mixedA Cochrane review of 8 studies (2,488 adults) found about 10% more people much improved with an 8% capsaicin patch than with a low-dose comparison patch; evidence quality moderate to very low.
Supplements: Prescription patch only, about 100 times stronger than conventional creams; says nothing about food or capsules.
Chronic nerve pain (low-strength cream)
Not enough evidenceA Cochrane review of six small studies (389 adults) of 0.075% cream found insufficient data and no meaningful effect beyond placebo cream; skin irritation was common.
Supplements: Low-strength cream; no benefit shown beyond placebo cream.
Death from any cause and heart disease (food)
Preliminary or mixedA pooling of 4 cohort studies (564,748 adults, median 9.7 years) found 12% lower all-cause and lower heart-disease death in regular spicy-food eaters, but not lower stroke death.
Supplements: Finding is for food (chili pepper, sauce, oil), not supplements; association only.
Digestive-tract cancer risk (food, case-control)
Preliminary or mixedA pooling of 14 case-control studies found high chili intake linked to higher risk of GI cancers (OR 1.64, interval 1.00 to 2.70) and esophageal cancer (OR 2.71); an umbrella review calls the overall picture unclear.
Supplements: Food intake study, not supplements; association only.
Stomach symptoms (dyspepsia, reflux, IBS)
Preliminary or mixedA 2010 review says one chili dose can worsen pain and burning in dyspepsia and IBS, while long-term chili intake improved dyspepsia and reflux symptoms in small randomized studies.
Supplements: Food or capsaicin; small studies; effect differs between a single dose and long-term intake.
Weight, appetite and blood pressure
Not enough evidenceMSK says thermogenic and appetite effects of capsaicin were small, and a systematic review found no effect on blood pressure or heart rate.
Supplements: No good evidence of useful benefit from cayenne capsules in the sources read.
Cell and animal findings on tumor cells
Lab or animal research onlyMSK reports lab and animal studies showing both harmful and protective effects of capsaicin on tumor cells.
Supplements: Lab and animal work only.
Connected topics
Open a group to see how each topic connects and how strong the evidence is.
Body systems (3)
- Digestive SystemPreliminary or mixed
Chili can aggravate dyspepsia and IBS symptoms in a single dose; long-term effects are mixed in small studies.
- Pain & InflammationClinically supported
Defined capsaicin skin products have regulator support for muscle pain; strong patches showed modest benefit in nerve pain.
- Heart & CirculationPreliminary or mixed
Observational pooling links regular spicy-food eating with lower heart-disease death; it does not show cause. MSK cites a systematic review finding no effect of capsaicin on blood pressure.
Body parts (4)
- SkinDocumented risk
Capsaicin products can burn or blister skin and must not be used on broken skin; hot chili oil irritates skin when handled.
- EyesDocumented risk
Capsaicin products must not be applied near the eyes, and hot chili oil irritates the eyes.
- StomachPreliminary or mixed
One chili dose can worsen burning and pain in dyspepsia and IBS; long-term intake improved some symptoms in small trials; MSK lists stomach irritation.
- Nervous SystemPreliminary or mixed
An 8% capsaicin patch helped about 10% more people with nerve pain than a comparison patch; low-strength cream showed no meaningful effect.
Functional actions (1)
- Pain ReliefClinically supported
The EU regulator accepts defined capsaicin plasters and creams for muscle pain; this is for skin products, not food.
Root causes (1)
- Medication Side EffectsDocumented risk
MSK lists possible interactions with blood pressure medicines, ACE inhibitors and cyclosporin, mainly for supplements.
Conditions & symptoms (6)
- Contact DermatitisDocumented risk
MSK reports contact dermatitis; the EU monograph lists skin hypersensitivity and blisters from capsaicin products.
- DyspepsiaPreliminary or mixed
Acute chili can aggravate dyspepsia pain and burning; long-term chili intake improved symptoms in small randomized studies.
- Postherpetic NeuralgiaPreliminary or mixed
An 8% prescription capsaicin patch helped about 10% more people much improved than a low-dose comparison patch in a Cochrane review; evidence quality moderate to very low. Skin product only.
- Food AllergyDocumented risk
Reviews describe spice allergy including pepper, from mild mouth reactions to anaphylaxis; MSK reports anaphylaxis after a pepperoncini meal.
- HeartburnPreliminary or mixed
Long-term chili ingestion was reported to improve reflux symptoms in small randomized studies; effect differs from a single dose.
- Irritable Bowel SyndromePreliminary or mixed
Acute chili can aggravate abdominal pain and burning in IBS; MSK cites a preliminary study of enteric-coated capsaicin for IBS pain and bloating.
Documented risks and interactions (4)
- Burning and skin or eye injury. Capsaicin burns eyes, broken skin and mucous membranes; skin products must not be used on broken skin, wounds, eczema, or near the eyes, and washing does not remove it well from skin.
- Medicine interactions (supplement level). MSK says capsaicin may affect blood pressure medicines, increase ACE-inhibitor cough, and should be avoided with cyclosporin; animal data suggest effects on antiplatelet drugs, theophylline and CYP3A/P-gp drugs, relevance unknown.
- Pregnancy and breastfeeding. MSK lists cayenne as contraindicated in pregnancy and breastfeeding, citing dermatitis in nursing infants; the EU monograph says capsaicin crosses the placenta and may pass into breast milk, with no human pregnancy data.
- Allergy and gut irritation. Reviews list pepper among spices that can cause allergy (abstracts do not say chili vs black pepper); MSK reports anaphylaxis after a pepperoncini meal, contact dermatitis, stomach irritation and bleeding in volunteers who ate dietary capsicum.
Frequently asked questions
Is cayenne sweet?
No. It is hot, with sometimes a mild fruity or earthy note. Heat is measured in Scoville units; cayenne usually rates 30,000 to 50,000. [2]
How much is normal?
USDA lists 1.8 g per teaspoon of ground cayenne. [15] We found no source for a usual recipe amount, so start small and add to taste.
Is it safe in pregnancy?
MSK lists cayenne as contraindicated in pregnancy and breastfeeding, and the EU monograph warns about skin products. [5][6] The sources do not set a limit for chili in cooking, so ask your midwife or doctor.
Can I take it with medicines?
MSK notes possible effects with blood pressure medicines, ACE inhibitors and cyclosporin, mainly for supplements. [5] If you take any of these, ask a pharmacist.
Does chili help you live longer?
A pooling of 4 cohort studies found 12% lower death risk in regular spicy-food eaters, but these studies cannot show chili is the cause. [9]
Can chili cause heartburn or stomach pain?
A review says a single chili dose can worsen pain and burning in people with dyspepsia or irritable bowel syndrome. [12]
More details: evidence, limits and cautions
The details behind this page: cautions, limits of the evidence and where sources disagree. Open any note to read it.
Safety note at a glance
Safety in more detail
- Medicines: MSK says capsaicin may affect blood pressure medicines and may increase the cough linked to ACE inhibitors. It says people who have had a transplant should avoid it with cyclosporin. Animal data suggest effects on antiplatelet drugs, theophylline and drugs handled by CYP3A or P-gp; relevance in people is not known. [5] These points are for supplements and concentrated products; the sources we read do not state them for chili in food.
- Pregnancy: MSK says cayenne is contraindicated in pregnancy. [5] The EU monograph, for skin products, says there are no data in pregnant women and that capsaicin crosses the placenta. [6] The sources do not give a limit for chili in cooking.
- Breastfeeding: MSK cites dermatitis in nursing infants whose mothers ate red-pepper-flavored food. [5] The EU monograph says capsaicin may pass into breast milk. [6]
- Children: the EU monograph does not recommend its skin products under 18 years. [6] The sources we read give no limit for chili in food.
- Allergy: reviews list "pepper" among spices that can cause allergy, from mild mouth reactions to anaphylaxis, with cross-reactions to pollen. The abstracts do not say whether this means chili or black pepper, so we cannot tie it to chili alone. [13][14] MSK reports anaphylaxis in one person after a meal containing pepperoncini, and contact dermatitis. [5]
- Liver and kidney: the sources we read do not describe liver or kidney problems from chili in food. [5]
- Surgery: the sources we read do not describe a surgery warning. Tell the surgical team about any supplement.
- Quality and contamination: cayenne powder can be a blend, and some chili products have been illegally dyed. [1][2]
- Amounts that cause trouble: MSK lists sweating, eye or nose irritation, stomach irritation and pain, and reports stomach-lining cell loss and bleeding in healthy volunteers who ate dietary capsicum, and high blood pressure in two men after large amounts of chili. [5] Very hot peppers can cause stomach pain, sweating and vomiting, sometimes needing hospital care. [2] Pepper spray, made from capsaicin, can cause serious injury if misused. [2]
References
- Wikipedia — Cayenne pepper. https://en.wikipedia.org/wiki/Cayenne_pepper (accessed 2026-10-24)
- Wikipedia — Chili pepper (first part of the article read). https://en.wikipedia.org/wiki/Chili_pepper (accessed 2026-10-24)
- Wikipedia — Chili powder. https://en.wikipedia.org/wiki/Chili_powder (accessed 2026-10-24)
- StillTasty — How long does ground cayenne pepper last? https://www.stilltasty.com/fooditems/index/16724 (accessed 2026-10-24)
- Memorial Sloan Kettering Cancer Center — About Herbs: Cayenne. https://www.mskcc.org/cancer-care/integrative-medicine/herbs/cayenne (accessed 2026-10-24)
- EMA/HMPC (EU) — Community herbal monograph on Capsicum annuum var. minimum and small-fruited Capsicum frutescens, fructus (EMA/HMPC/674139/2013, 5 May 2015). https://www.ema.europa.eu/en/documents/herbal-monograph/final-european-union-herbal-monograph-capsicum-annuum-l-var-minimum-miller-heiser-and-small-fruited-varieties-capsicum-frutescens-l-fructus_en.pdf (accessed 2026-10-24)
- Derry S et al. — Topical capsaicin (high concentration) for chronic neuropathic pain in adults. Cochrane Database Syst Rev 2017; abstract read via Europe PMC. https://pubmed.ncbi.nlm.nih.gov/28085183/ (accessed 2026-10-24)
- Derry S, Moore RA — Topical capsaicin (low concentration) for chronic neuropathic pain in adults. Cochrane Database Syst Rev 2012; abstract read via Europe PMC. https://pubmed.ncbi.nlm.nih.gov/22972149/ (accessed 2026-10-24)
- Association of spicy chilli food consumption with cardiovascular and all-cause mortality: a meta-analysis of prospective cohort studies. Angiology 2021; abstract read via Europe PMC. https://pubmed.ncbi.nlm.nih.gov/33657876/ (accessed 2026-10-24)
- Spicy food and chili peppers and multiple health outcomes: umbrella review. Mol Nutr Food Res 2022; abstract read via Europe PMC. https://pubmed.ncbi.nlm.nih.gov/36111960/ (accessed 2026-10-24)
- Association between chili pepper consumption and risk of gastrointestinal-tract cancers: a meta-analysis. Front Nutr 2022; abstract read via Europe PMC. https://pubmed.ncbi.nlm.nih.gov/36407551/ (accessed 2026-10-24)
- Are rice and spicy diet good for functional gastrointestinal disorders? J Neurogastroenterol Motil 2010; abstract read via Europe PMC. https://pubmed.ncbi.nlm.nih.gov/20535343/ (accessed 2026-10-24)
- Spices, herbs and allergic reactions in children: myth or reality. Front Allergy 2025; abstract read via Europe PMC. https://pubmed.ncbi.nlm.nih.gov/41306764/ (accessed 2026-10-24)
- Allergic reactions to spices: a review of sensitivities to pepper, cumin, oregano, anise, mustard and other spices. Eur Ann Allergy Clin Immunol 2026; abstract read via Europe PMC. https://pubmed.ncbi.nlm.nih.gov/40341008/ (accessed 2026-10-24)
- USDA FoodData Central, SR Legacy (April 2018) — Spices, pepper, red or cayenne (fdcid 170932) and Spices, chili powder (fdcid 171319), per-100 g values and household portions from the site's USDA data file.