Which Food Has Melatonin?

Melatonin is best known as a supplement—but long before it came in a bottle, it existed in food. Dozens of everyday ingredients naturally contain this sleep-regulating hormone, and research confirms that eating them can raise measurable melatonin levels in your blood. Knowing which foods are highest—and when to eat them—is one of the most practical, drug-free sleep strategies available.

This article ranks the top melatonin-containing foods by evidence strength, explains why some sources dramatically outperform others, and clarifies when food alone may not be sufficient for people dealing with chronic sleep disruption.

Why Plants and Animals Naturally Contain Melatonin

Melatonin is not a nutrient invented by supplement manufacturers. It is an ancient molecule that evolved in single-celled organisms over a billion years ago, long before the vertebrate pineal gland existed. Today, melatonin is found across the biological kingdoms—in fungi, plants, and animals—where it serves as a universal antioxidant and stress-signalling compound.

In plants, melatonin helps manage oxidative stress caused by UV radiation, temperature extremes, drought, and pathogen attack. It is synthesised from the amino acid tryptophan via serotonin—exactly the same biosynthetic pathway your brain uses at night. This shared chemistry is why melatonin concentrations in plant tissues vary by season, time of day, and growing conditions, just as your own pineal gland responds to light and darkness.

A landmark 2017 review published in Nutrients by Meng et al. at Sun Yat-sen University catalogued melatonin across dozens of food categories and confirmed that food-sourced melatonin can measurably raise serum melatonin concentrations in humans. The review found that nuts have the highest melatonin content of plant foods, while eggs and fish lead among animal sources. Crucially, the authors confirmed that serum melatonin rises significantly after consumption of melatonin-containing foods—making diet a genuinely relevant variable in sleep health, not just a wellness trend.

To understand how melatonin works in the body before exploring its food sources, see our guide: What Is Melatonin?

Top Plant-Based Foods High in Melatonin

Pistachios — the highest-ranked food source

Of all commonly consumed foods, pistachios contain the most melatonin per gram by a significant margin. Research conducted by Louisiana State University in partnership with American Pistachio Growers found that American-grown pistachios contain approximately 660 nanograms of melatonin per gram—more than almost any other food measured. Notably, roasting did not reduce the melatonin content, meaning roasted pistachios are just as viable a source as raw ones.

A separate study published in the Journal of Food Composition and Analysis confirmed that pistachios are richer in melatonin than almonds, with pistachio samples ranging from roughly 2,609 pg/g up to over 12,000 pg/g depending on cultivar. The variation between cultivars is substantial, which is why published figures for pistachio melatonin content span a wide range across studies. Pistachios also supply tryptophan—the amino acid precursor to serotonin and melatonin—and magnesium, two additional sleep-supporting compounds.

Tart cherries — the most clinically studied fruit

Tart Montmorency cherries have more human clinical evidence behind them than any other food for sleep. In a randomised, double-blind, placebo-controlled crossover trial published in the European Journal of Nutrition, 20 healthy adults consumed 30ml of tart cherry juice concentrate twice daily for seven days. The cherry juice group showed significantly elevated urinary melatonin levels, along with meaningful increases in total sleep time (34 minutes) and sleep efficiency (5–6%) compared to placebo.

A 2025 systematic review in Food Science & Nutrition that examined seven interventional studies found that three reported significant improvements in sleep duration, efficiency, or onset time, and three separately reported increases in melatonin levels following tart cherry consumption. The review also noted that tart cherries reduced inflammatory markers including CRP and MDA—relevant because inflammation is increasingly linked to poor sleep quality. Tart cherry juice concentrate is the most practical form; look for unsweetened concentrate with no added sugar.

Walnuts

Walnuts have been measured in multiple studies as a reliable melatonin source among tree nuts. A 2022 study published in the Journal of Food Composition and Analysis investigated melatonin content across four walnut cultivars and found that roasting significantly reduced walnut melatonin content compared to raw nuts—unlike pistachios. The study confirmed that melatonin content also declines during the ripening process but recovers post-harvest when the fruits are edible. A 2025 randomised crossover trial published in Food and Function found that a daily 40g serving of walnuts at dinner for four weeks increased melatonin levels and improved both sleep quality and daytime alertness in 76 healthy young adults aged 20–28.

Kiwi fruit

Kiwi fruit contains melatonin and its precursor serotonin—a combination that appears to produce meaningful sleep effects in controlled research. The landmark 2011 study at Taipei Medical University, published in the Asia Pacific Journal of Clinical Nutrition, had 24 adults with self-reported sleep disturbances eat two kiwifruits one hour before bed nightly for four weeks. Results showed sleep onset latency decreased 35.4%, waking after sleep onset decreased 28.9%, total sleep time increased 13.4%, and sleep efficiency improved 5.41%. Researchers attribute the effect to kiwi's serotonin content—which the body uses as a direct substrate for melatonin synthesis—as well as its high antioxidant profile, folate, and potassium.

Grapes, tomatoes, and other fruits and vegetables

Melatonin has been detected in a wide range of other produce. Grapes—including wine and grape juice—contain measurable melatonin, as do tomatoes, strawberries, goji berries, cherries, bananas, and pineapples. Among vegetables, peppers and tomatoes rank highest; melatonin is undetectable or very low in potatoes and beetroot. In cereals, whole-grain varieties consistently outperform polished or refined equivalents—polished rice contains roughly one-third less melatonin than whole rice, and whole wheat, barley, and oats are all meaningful dietary sources.

Top Animal-Based Foods That Contain Melatonin

Eggs

Among animal foods, eggs are one of the most melatonin-dense sources per serving. The 2017 Nutrients review by Meng et al. placed eggs at the top of the animal food category alongside fish, noting their practical advantage as a nutrient-dense daily food. The review confirmed that melatonin from eggs contributes to measurably elevated serum melatonin in humans following consumption. Eggs also supply protein, iron, vitamin B12, and selenium—all of which support circadian health through complementary pathways.

Fatty fish

Salmon, sardines, mackerel, and other oily fish contain melatonin alongside omega-3 fatty acids (DHA and EPA), vitamin D, and tryptophan—a cluster of nutrients with independent sleep-supporting roles. A 2020 systematic review in the Journal of Food Science identified fatty fish as one of the primary animal-based melatonin sources, noting that the combination of omega-3 fatty acids and melatonin in fish makes them uniquely suited to supporting both serotonin regulation and sleep quality. One cohort study cited in the review found that children who ate fish once a week reported better sleep quality than those who did not.

Milk

Milk contains both melatonin and tryptophan, and the melatonin content is highly time-dependent. The 2020 Journal of Food Science review confirmed that milk collected at night contains up to ten times more melatonin than milk collected during the day—a phenomenon that applies to both cow's milk and human breast milk. This is the biological basis behind the folk remedy of warm milk before bed, which has more pharmacological grounding than most people realise. "Night milk" products are commercially available in some markets specifically for this reason.

What Happens to Your Melatonin Levels After Eating These Foods

The bioavailability of melatonin from food follows the same basic pharmacokinetics as supplemental melatonin. The 2017 Nutrients review reported that oral melatonin bioavailability ranges from 1% to 37% depending on the individual, with women showing higher absorption than men. While food doses are far smaller than supplement doses, regular dietary intake appears to create a meaningful cumulative effect on circadian signalling rather than a single pharmacological spike.

A 2023 study published on PMC examined 353 adolescents and young adults and assessed their intake of melatonin-containing foods (FMT) over the day and at dinner. Higher daytime FMT consumption was significantly associated with earlier chronotype (β = −0.09), reduced social jetlag (β = −0.07), improved sleep quality (β = −0.06), lower depression scores (β = −0.11), and reduced central adiposity (β = −0.08). The researchers concluded that dietary melatonin functions as a chronobiotic—a substance capable of shifting the body's internal clock—and that the effect extends beyond just dinner-time consumption.

Importantly, food-sourced melatonin does not replace your pineal gland's output. What it does is supplement it at the margins—particularly relevant in two populations where endogenous melatonin production is suppressed: older adults (whose pineal gland calcifies with age, reducing output) and people exposed to artificial light at night, which suppresses melatonin regardless of diet.

If you're concerned about the potential side effects of melatonin at higher supplement doses, dietary sources pose essentially no risk of overdose. For a full overview of how melatonin behaves in the body and what symptoms to watch for at higher intakes, see our article on melatonin side effects.

How to Time Melatonin-Rich Foods for Better Sleep

Timing matters more than most people realise. Melatonin production in your pineal gland begins rising 1–2 hours before your habitual sleep time in response to diminishing light. Consuming melatonin-containing foods during this window means the dietary melatonin arrives when your system is already primed to use it.

The Taipei Medical University kiwi study specifically instructed participants to eat two fruits one hour before bedtime—and the results were significant. The tart cherry studies used two 30ml servings per day (morning and evening), suggesting that splitting intake across the day rather than loading it all at night may also be effective, consistent with the chronobiotic findings from the 2023 student cohort study.

Practical evening combinations with a strong evidence base include: a small handful (28g) of raw pistachios with tart cherry juice; two kiwi fruits as a standalone snack; grilled salmon with whole grains at dinner; and a glass of warm milk (ideally night-collected if available). Registered dietitians commonly recommend combining tart cherries with a protein or fat source—such as a few almonds—to slow the absorption of fruit sugars and avoid a rapid blood glucose spike that could fragment sleep.

Processing affects content significantly. Roasting reduces melatonin in walnuts and most other nuts. Polishing rice removes roughly a third of its melatonin. Choosing whole-grain cereals over refined alternatives and raw or lightly processed nuts over heavily roasted versions will preserve more of the naturally occurring melatonin.

When a Supplement Makes More Sense: BioAbsorb Melatonin

Diet-first is always the right instinct. Food-sourced melatonin comes packaged with antioxidants, fibre, healthy fats, and micronutrients that a supplement cannot replicate. But there are specific situations where even a consistent melatonin-rich diet is unlikely to be sufficient.

Jet lag disrupts circadian timing acutely—a problem that requires a dose-controlled, timed intervention, not a dietary adjustment. Shift workers face a chronic mismatch between their work schedule and their biology that dietary melatonin cannot meaningfully correct. Older adults experience a measurable decline in endogenous melatonin production as the pineal gland calcifies; in this population, supplementation can restore levels that diet alone cannot. And for people with diagnosed circadian rhythm disorders—such as delayed sleep-wake phase disorder—clinical evidence consistently supports supplement doses well above what food can provide.

BioAbsorb Melatonin is formulated for rapid absorption, delivering a precise, consistent dose timed to your sleep window. Unlike food sources, where melatonin content varies by cultivar, season, growing conditions, and cooking method, a supplement gives you certainty about what you're taking and when. For anyone navigating jet lag, shift work, age-related sleep decline, or a clinical sleep disorder, BioAbsorb Melatonin offers a reliable, evidence-aligned complement to a melatonin-supportive diet.

Frequently Asked Questions About Foods with Melatonin

Which single food has the highest melatonin content?

Pistachios are the most melatonin-dense commonly consumed food, with research measuring approximately 660 nanograms per gram—significantly more than most fruits, vegetables, and other nuts. Tart cherries are the highest-ranked fruit source and have the most clinical evidence supporting their effect on sleep. Among animal foods, eggs and fatty fish such as salmon and sardines lead the rankings.

Can eating melatonin-rich foods replace a supplement?

For most healthy adults with mild, situational sleep difficulties, a diet consistently rich in melatonin-containing foods may provide enough support alongside good sleep hygiene. However, food doses are far smaller than typical supplement doses (0.5–5mg). For specific conditions like jet lag, shift work disorder, or age-related melatonin decline, a supplement provides dose certainty and timing control that diet cannot match.

Does cooking or processing destroy melatonin in food?

Yes, for most foods. Roasting reduces melatonin in walnuts and most nuts, though research on pistachios found that roasting did not significantly affect their melatonin content. Milling and polishing grains removes roughly one-third of their melatonin. Choosing whole-grain cereals, raw nuts where appropriate, and minimally processed versions of melatonin-rich foods preserves more of the naturally occurring hormone.

What time of day should I eat melatonin-rich foods?

For sleep support, the most evidence-backed timing is 30–60 minutes before bed. The Taipei Medical University kiwi study used one hour before bedtime; the tart cherry studies split intake between morning and evening. A 2023 study found that daytime melatonin food consumption was also associated with better chronotype and reduced social jetlag, suggesting benefits from spreading intake across the day rather than concentrating it only at dinner.

Are there any risks to eating large amounts of melatonin-rich foods?

Dietary melatonin from whole foods poses no known toxicity risk. You cannot overdose on melatonin from pistachios or tart cherries the way you theoretically could from very high-dose supplements. However, some melatonin-rich foods—particularly tart cherry juice—are high in natural sugars, so portion awareness remains important for overall metabolic health. If you are considering melatonin supplementation and have a medical condition or take medications, consult your healthcare provider first.

Does milk really help you sleep because of melatonin?

Partly, yes. Milk contains both melatonin and tryptophan, and night-collected milk contains up to ten times more melatonin than daytime milk. However, the total melatonin dose from a single glass of standard milk is still modest. The sleep association with warm milk likely involves multiple mechanisms: the tryptophan content, the psychological comfort of a warm beverage, and the calcium content (which supports melatonin synthesis). It is a useful habit, not a standalone sleep intervention.

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Research References

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4. Lin HH, Tsai PS, Fang SC, Liu JF. Effect of kiwifruit consumption on sleep quality in adults with sleep problems. Asia Pacific Journal of Clinical Nutrition. 2011;20(2):169–174. PubMed 21669584
5. Losso JN, Finley JW, Karki N, et al. Pilot Study of Tart Cherry Juice for the Treatment of Insomnia and Investigation of Mechanisms. American Journal of Therapeutics. 2018;25(2):e194–e201. PMC5617749
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7. Rodríguez H, Moyano E, Hevia D, Sainz RM, Mayo JC. Bioactive phytochemicals of tree nuts. Determination of the melatonin and sphingolipid content in almonds and pistachios. Journal of Food Composition and Analysis. 2019;77:1–8. ScienceDirect
8. American Pistachio Growers. Study Finds American Grown Pistachios Contain Melatonin. 2019. americanpistachios.org
9. Gubin D, Malishevskaya T, Astakhov Y, et al. The Association between Melatonin-Containing Foods Consumption and Students' Sleep–Wake Rhythm, Psychoemotional, and Anthropometric Characteristics. PMC. 2023. PMC10420797
10. Barforoush M, Raeisi-Dehkordi H, Mohammadi SM, et al. The Effect of Tart Cherry on Sleep Quality and Sleep Disorders: A Systematic Review. Food Science & Nutrition. 2025. doi:10.1002/fsn3.70923. PMC12438961
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