Do black sesame seeds help hair growth?

Nobody knows, because nobody has tested it in people. We found no randomized trial and no systematic review of eating sesame seeds, black or white, for hair growth, hair loss or greying. A 2023 systematic review of 30 studies on nutritional treatments for hair loss found that no diet-based intervention study met its criteria at all. The only experiment we found was done on skin cells in a dish.

Unsettled. This is an absence of evidence, which is different from evidence that sesame does nothing. The question is open because no trial has been run, in black sesame, white sesame or sesame oil taken by mouth.

What the trials found

Trials of sesame and hair

None. The 2023 review covered 17 randomized trials, 11 non-randomized clinical studies and 2 case series in people with hair loss and no known nutritional deficiency, searched up to October 2021. Supplements made it in. No diet-based intervention study met its criteria. A 2026 systematic review of 17 studies on diet and hair did not name sesame or any other specific food.

The one laboratory study

Laboratory data suggest that sesamin, a compound in sesame, can reverse stress signals driven by the male hormone DHT in skin cells. At 10 to 80 micromolar, sesamin reversed those signals in keratinocytes grown in a dish and raised WNT10B, a signaling molecule. These were skin cells, not hair follicles and not people. A concentration in a dish does not tell you how much sesame anyone would need to eat, and the study did not try to answer that.

What blood tests show in hair loss

Observational data link some nutrients in the blood with alopecia areata, a patchy autoimmune hair loss. A 2025 meta-analysis of 34 studies with 4931 people found lower blood zinc in people with the condition, with a standardized difference of -0.69 (interval -0.99 to -0.39), and linked vitamin D deficiency with higher odds of having it.

Odds of alopecia areata with vitamin D deficiency

Observational data

Observational data, so this is an association and cannot show cause. It is an odds ratio, not a risk. Nothing in it is about sesame. Source: card ev-seshair-03 below.

An earlier meta-analysis of 10 studies with 764 people found lower blood zinc and selenium in alopecia areata, and no difference in iron, ferritin, copper or magnesium. The 2026 review found higher vitamin D and iron went with less hair loss across its studies, most of them observational. None of this shows that a low level causes hair loss, and none of it was about sesame. If your hair is falling out, the cause is a question for a doctor.

Who should be careful

Not for everyone. People with a sesame allergy, or a nut or peanut allergy. In blinded food challenges, as little as 30 mg of sesame seed set off a reaction in patients with food allergy. A review of 210 studies found no fatal reaction below 5 mg of allergen protein, and listed sesame among the allergens where severe reactions below that dose were on record.

Allergies here tend to come together. Among 122 children aged 0 to 16 with at least one confirmed nut or sesame allergy, 60.7% (interval 51.4% to 69.4%) proved allergic to more than one of peanut, tree nuts and sesame on food challenge. That figure is from children who were already allergic, not from the general population. A 2026 systematic review puts sesame allergy at roughly 0.1 to 0.2% of people, as a rough guide whose source the abstract does not give. We found no studies on sesame in pregnancy or with medicines that bear on this question, so the page is silent on those.

What expert bodies say

We found no expert body that recommends sesame seeds for hair. The one regulatory position on this page is about safety. In the United States, sesame must be labeled as an allergen on packaged foods and dietary supplements since 1 January 2023, according to the FDA.

How we searched

Searched: a local copy of PubMed, queried on 7 October 2026 for sesame, sesamin, sesame oil or Sesamum with hair, alopecia, hair loss, greying and hair growth, across all study types and again for observational studies. Both returned the same 3 records and none was relevant. A wider search for hair loss with zinc, iron, ferritin, micronutrients, supplements or diet returned 53 syntheses and trials, of which 7 were read. Europe PMC returned 1969 hits for sesame with hair, alopecia or greying. We screened the first 40 and one was relevant. Web searches for trials of black sesame seed on hair growth or greying. ClinicalTrials.gov listed no trial.

Included: the 2023 review of nutritional treatments for hair loss, the cell study of sesamin, two meta-analyses of blood trace elements in alopecia areata, the 2026 review of diet and hair, and two studies of sesame allergy.

Excluded: a review of micronutrients in pattern hair loss with no effect sizes, a case report on seed cycling for fertility, a commercial trial of a multi-ingredient supplement with black sesame extract published only in trade press, where the sesame effect could not be separated, and papers on sesame oil or herbal oils put on the scalp, which is a different question from eating the seeds.

What we read: abstracts for all included papers.

What we could not get: the original report of sesame oil applied for alopecia areata from Baghdad, which we could not find in PubMed or Europe PMC.

What would change this answer

A randomized trial in people with hair thinning or early greying that gives black sesame seeds against a placebo food and counts hair. We found none registered.
A study that tests the traditional claim for greying directly. The literature we could reach has no clinical test of it.
Work in human hair follicles, then in people, showing whether sesamin from food reaches the scalp at all.

More on the seeds themselves, their copper, calcium and the allergy question, is on the sesame seeds page.

The food behind this question

Sesame seeds: heavy on copper, light on proof — numbers, evidence and safety

Sources

ev-seshair-01 · Randomized controlled trial(s) · systematic review of RCTs and clinical studies · n = 30 studies
No diet-based interventional studies met inclusion criteria.
Who: individuals with alopecia or hair loss without known baseline nutritional deficiency; 17 RCTs, 11 non-randomized clinical studies, 2 case series
Effect: no diet-based interventional study met inclusion criteria; sesame not among the products with evidence
Certainty: Search up to October 2021. The answer to H1 is an absence of studies, not a negative result.
JAMA Dermatol, 2023 · checked 2026-10-07 · we read the abstract
ev-seshair-02 · Laboratory or animal data · in vitro cell study with network pharmacology · n = —
Cell assays revealed that 10-80 µM sesamin reversed DHT-induced p38 phosphorylation, normalized AR expression, down-regulated pro-apoptotic BAX, restored anti-apoptotic BCL2, and elevated WNT10B.
Who: DHT-stimulated HaCaT keratinocytes in vitro, plus network pharmacology and docking
Effect: 10-80 uM sesamin reversed DHT-induced p38 phosphorylation, normalized AR expression, raised WNT10B
Certainty: Keratinocyte cells, not hair follicles and not people; concentrations do not translate to food. The article title promises more than the design delivers.
Scientific Reports, 2026 (Li et al.) · checked 2026-10-07 · we read the abstract
ev-seshair-03 · Observational data · systematic review and meta-analysis of observational studies · n = 4931
Vitamin D deficiency was strongly associated to an elevated risk of AA (OR = 2.48, 95% CI = 1.47-4.17, p < 0.05).
Who: patients with alopecia areata versus healthy controls, 34 papers from 16 countries
Effect: serum zinc SMD -0.69 (95% CI -0.99 to -0.39); vitamin D deficiency OR 2.48 (1.47 to 4.17)
Certainty: Association in blood, not an effect of food; nothing about sesame. Sesame contains zinc, but whether its food changes hair has not been tested.
J Cosmet Dermatol, 2025 · checked 2026-10-07 · we read the abstract
ev-seshair-04 · Observational data · meta-analysis of observational studies · n = 764
However, there was no significant difference between the AA patients and controls in the levels of serum copper (P = 0.81), serum iron (P = 0.36), serum ferritin (P = 0.37) and serum magnesium (P = 0.07).
Who: patients with alopecia areata and healthy controls
Effect: lower serum zinc and selenium (P < 10-4); no difference in copper, iron, ferritin, magnesium
Certainty: Observational data, causality not established.
J Dermatol, 2017 · checked 2026-10-07 · we read the abstract
ev-seshair-05 · Observational data · systematic review · n = 61332
Higher levels of vitamin D and iron were inversely related to alopecia.
Who: individuals aged 3 years or older, 61332 participants, 97% women
Effect: higher vitamin D and iron inversely related to alopecia; alcohol and sugary drinks positively correlated with hair loss
Certainty: Mostly observational studies; sesame not mentioned.
Nutr Health, 2026 · checked 2026-10-07 · we read the abstract
ev-seshair-06 · Observational data · single and double blind placebo-controlled oral food challenges · n = 12 positive sesame challenges
The lowest reactive threshold has been observed at less than 2 mg of egg; 5 mg of peanut, 0.1 mL of milk and 30 mg of sesame seed.
Who: patients with IgE-dependent food allergy undergoing single or double blind placebo-controlled oral challenges, 12 positive sesame challenges
Effect: lowest reactive threshold 30 mg of sesame seed
Certainty: The challenge is not randomized by design, hence C. A spoonful of sesame is grams, hundreds of times more than the threshold.
Clin Exp Allergy, 2003 · checked 2026-10-07 · we read the abstract
ev-seshair-07 · Observational data · prospective multicentre study with sequential oral food challenges · n = 122
Overall, the rate of coexistent peanut, tree nut, and sesame seed allergy was 60.7% (n = 74/122; 95% CI, 51.4% to 69.4%).
Who: children aged 0 to 16 years with at least 1 confirmed nut or sesame seed allergy, London, Geneva and Valencia
Effect: coexistent peanut, tree nut and sesame seed allergy 60.7% (95% CI 51.4% to 69.4%)
Certainty: A pediatric sample of allergic children, not the general population.
J Allergy Clin Immunol, 2020 · checked 2026-10-07 · we read the abstract
sesd-daily-r3-12 · Position of an expert body · agency statement implementing the FASTER Act · n = —
As of January 1, 2023, sesame must be labeled as an allergen on packaged foods and dietary supplements.
Who: US packaged foods and dietary supplements regulated by FDA
Effect: mandatory allergen declaration from 2023-01-01; the nine major allergens are milk, eggs, fish, crustacean shellfish, tree nuts, peanuts, wheat, soybeans and sesame
Certainty: web quote, checked by eye on TWO independent FDA pages: the FASTER Act page gives exactly this sentence, the Food Allergies page confirms the same fact in other words ("The change was effective on January 1, 2023"), i.e. the identical sentence is confirmed once, the fact twice
US FDA, FASTER Act: Sesame as the Ninth Major Food Allergen · checked 2026-09-25 · we read the fulltext
sesd-daily-r3-14 · Observational data · systematic review of provocation studies and case reports · n = 210 studies
In the 210 studies included, in our search, no reports of fatal anaphylactic reactions reported below 5 mg protein ingested were identified. However, in provocation studies and case reports, severe reactions below 5 mg were reported for the following allergens: eggs, fish, lupin, milk, nuts, peanuts, soy, and sesame seeds.
Who: 210 provocation studies and case reports on the 14 major EU food allergens, searched to 24 January 2021, with a Delphi expert consensus
Effect: no fatal reaction reported below 5 mg protein; severe reactions below 5 mg reported for eggs, fish, lupin, milk, nuts, peanuts, soy and sesame seeds
Certainty: synthesis of challenge studies and case descriptions inside the GA2LEN position paper, hence level C, not E. For the page the second part matters: sesame is in the list of allergens that caused severe reactions below 5 mg of protein
Allergy, 2022 · checked 2026-09-25 · we read the abstract
sesd-daily-r3-17 · Observational data · systematic review, narrative synthesis · n = —
However, despite its widespread culinary and industrial applications, sesame has emerged as a growing allergenic concern, eliciting IgE-mediated reactions in approximately 0.1-0.2 % of the population.
Who: published literature on sesame nutrition, health effects and allergenicity
Effect: IgE-mediated reactions in approximately 0.1 to 0.2 percent of the population
Certainty: the review is not limited to randomized work and does not give the source of the share itself within the abstract, so this is a benchmark, not an exact prevalence estimate
Food Chem, 2026 · checked 2026-09-25 · we read the abstract

How this page was made. Evidence was extracted from primary sources into cards, every number was re-checked against the source, and the text was written from those cards. Bioma Learn has no human medical reviewer at this time, and we say so rather than invent one. Methodology. This is information, not medical advice.