Quick Answer: Yes, cherries can make you sleepy. Tart (Montmorency) cherries contain natural melatonin and other sleep-promoting compounds. Studies show drinking tart cherry juice twice daily can increase sleep time by up to 84 minutes. Sweet cherries have less melatonin but still help. Timing and dose both matter.
In This Guide
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If you have ever eaten a big bowl of cherries in the afternoon and found yourself nodding off earlier than usual, that was not a coincidence. Cherries contain a meaningful amount of naturally occurring melatonin, along with several other compounds that work in ways that support sleep. The science here is more solid than most food-sleep connections.
But the details matter. Not all cherries are equal, and the way you consume them, when, how much, and in what form, affects how useful they are as a sleep aid.
This guide covers what we actually know from the research, which varieties are worth choosing, and how to fit cherries into a practical sleep routine.
Why Cherries Can Make You Sleepy
Cherries contain melatonin, the hormone your body uses to signal that it is time to sleep. Melatonin production in the brain rises naturally in response to darkness, typically beginning a couple of hours before your usual bedtime. Eating food that contains preformed melatonin gives that process a small external boost.
What makes cherries unusual among foods is that their melatonin content is not trivial. Most plant-based foods contain trace amounts at best. Tart cherries, particularly the Montmorency variety, contain enough melatonin that researchers can measure meaningful changes in urinary melatonin levels after consumption.
What the Research Shows
A randomised controlled trial published in the European Journal of Nutrition (Howatson et al., 2012) found that adults who drank Montmorency tart cherry juice concentrate twice daily experienced significantly higher urinary melatonin concentrations and slept an average of 84 minutes longer compared to a placebo group. Sleep quality scores also improved. This is one of the most cited cherry-sleep studies and used real cherry juice, not supplements.
Beyond melatonin, cherries also contain tryptophan (an amino acid that the body uses to make both serotonin and melatonin) and anthocyanins (anti-inflammatory compounds that may reduce pain-related sleep disruption). They also have a modest effect on the enzyme that breaks down tryptophan in the blood, meaning more tryptophan stays available for conversion.
Tart vs Sweet Cherries: Which Works Better?
This is where most people get confused, because not all cherries are the same fruit in terms of sleep-relevant chemistry.
Tart Cherries (Montmorency)
Tart cherries, particularly Montmorency, are the clear front-runner for sleep purposes. They have significantly higher melatonin concentrations than sweet varieties. Research consistently focuses on this type, and it is the one used in the clinical trials showing measurable sleep improvements.
Tart cherries are not typically sold fresh in Canadian grocery stores year-round. You are more likely to find them as dried cherries, frozen, or in juice concentrate form. The concentrate is the most studied form.
Sweet Cherries (Bing, Rainier)
The sweet cherries you pick up at the grocery store in summer, Bing and Rainier being the most common, also contain melatonin, just at lower concentrations than Montmorency. They still contribute to your body's melatonin pool and offer the other compounds (tryptophan, anthocyanins) that support sleep. But if you are specifically trying to use cherries as a sleep aid, tart varieties are the better choice.
| Cherry Type | Melatonin Level | Best Available Form | Sleep Research Evidence |
|---|---|---|---|
| Montmorency (Tart) | High (13-17 ng/g fresh weight in some studies) | Juice concentrate, dried, frozen | Strong (multiple RCTs) |
| Bing (Sweet) | Moderate (2-3 ng/g) | Fresh, frozen | Limited direct evidence |
| Rainier (Sweet) | Low-moderate | Fresh, seasonal | Very limited |
How Much Cherry Do You Need?
The clinical research gives us some useful reference points, though you should note these were study doses, not personal prescriptions.
Juice Concentrate
The Howatson et al. study used 30 ml of tart cherry juice concentrate (mixed with 100 ml of water) taken twice daily: once in the morning and once about an hour before bed. This is roughly equivalent to about 45-60 whole tart cherries per serving.
Whole Fruit
If you are using fresh or frozen tart cherries, a cup (about 150g or roughly 20-25 cherries) taken in the evening is a reasonable starting point. This will not deliver as concentrated a dose as the studied juice concentrate, but it is a practical and nutritious choice.
Dried Cherries
Dried tart cherries are more concentrated, so a smaller volume delivers more melatonin per gram. About 30-40g (a small handful) of dried tart cherries in the evening is comparable to a larger serving of fresh fruit. Check labels, as many commercially dried cherries are sweetened.
Practical Dose Guide
There is no universally established "correct dose" of cherry for sleep. Start with one of the forms above in the evening, a couple of hours before bed. If you notice a positive effect after a week or two, you can continue. If not, the cherries are still a nutritious food and not wasted. Cherries are not a pharmaceutical and the effect will vary person to person.
Cherry Juice vs Whole Cherries
Most of the strong clinical evidence comes from tart cherry juice concentrate, not whole fruit. This matters because concentrate is more standardised and delivers a higher melatonin dose per volume than whole cherries.
That said, whole cherries and dried cherries have advantages too. They contain fibre, which juice does not, and fibre itself has some role in gut health and sleep through its effects on the gut microbiome. Whole fruit also tends to have a lower glycaemic impact than juice.
If your goal is specifically to replicate the research results, concentrated tart cherry juice is the closer option. If you are looking for a sustainable, enjoyable habit, whole or dried cherries eaten regularly in the evening are a reasonable and tasty approach.
Cherry Juice and Insomnia in Older Adults
A study by Pigeon et al. (2010) in the Journal of Medicinal Food found that older adults with insomnia who drank tart cherry juice twice daily for two weeks experienced significantly reduced insomnia severity compared to a placebo. Insomnia in older adults is partly driven by reduced endogenous melatonin production, making dietary melatonin sources more likely to have a noticeable effect in this population.
When to Eat Cherries for Better Sleep
Timing matters with melatonin, whether from supplements or food. Your body's own melatonin production follows a circadian rhythm, rising in the evening and peaking in the early hours of the morning. Adding dietary melatonin works best when it supports that natural rise rather than fighting against it.
The practical guidance from research is to consume tart cherry juice or whole cherries in the evening, ideally one to two hours before your intended bedtime. Taking it much earlier may not provide the timing benefit. Taking it later, right before bed, is less optimal because the melatonin from food takes time to be absorbed and metabolised.
The morning dose used in some studies is thought to support the overall circadian melatonin system rather than providing a direct evening sedative effect. If you are eating cherries as a food rather than a targeted supplement, the evening serving is the most relevant one for sleep.
Other Compounds That Support Sleep
Melatonin gets most of the attention, but cherries have a few other compounds worth noting.
Tryptophan
Tryptophan is an essential amino acid that your body converts into serotonin and, from there, into melatonin. Cherries contain modest amounts. They are not a high-protein food, so the tryptophan content is not as significant as what you would get from meat, eggs, or legumes. But it contributes to the overall picture.
Anthocyanins
These are the compounds that give cherries their deep red colour. Anthocyanins are potent anti-inflammatory and antioxidant compounds. They have been studied in the context of exercise recovery and joint pain. Reducing inflammation and pain can improve sleep quality indirectly, particularly in people who experience discomfort at night.
If you are someone who wakes during the night due to joint aches or body soreness, the anti-inflammatory properties of tart cherries may provide some additional benefit beyond their melatonin content.
Procyanidins
Tart cherries also contain procyanidins, compounds that have been shown in some research to inhibit the enzyme indoleamine 2,3-dioxygenase (IDO), which breaks down tryptophan. By slowing tryptophan breakdown, more tryptophan stays available for serotonin and melatonin synthesis. This is a secondary mechanism that reinforces the melatonin content.
Local Fruit and Sleep in Ontario
Ontario is one of Canada's major sour cherry-growing regions, with significant production in the Niagara Peninsula, just down the road from Brantford. Fresh Montmorency cherries are typically available locally in July and early August. Frozen sour cherries are available year-round at many grocery stores. Tart cherry juice concentrate, the form most studied for sleep, can be found at health food stores in Brantford and online. If you are lucky enough to buy local fresh sour cherries in season, they are the closest you will get to the studied product.
Fitting Cherries Into a Complete Sleep Approach
Cherries are genuinely helpful, but they work best as part of a broader sleep routine. The environment you sleep in matters just as much. If your bedroom is too warm, your mattress is causing you to toss and turn, or you are sleeping on a surface that creates pressure points, cherries are not going to fix that.
Dorothy, our sleep specialist at Mattress Miracle, often tells customers that food and environment both matter. "Cherries are a nice evening ritual," she says. "But if your mattress is waking you up at 3 a.m., the cherries are not going to keep you asleep."
For a complete picture of what supports good sleep, our article on how to sleep better at night naturally covers the full range of approaches. And if you are curious about other foods with sleep-relevant properties, see our article on peanut butter and sleep for the tryptophan and blood sugar angle.
If your mattress is part of the problem, it may be time to visit us at our Brantford showroom and try a few options. We will not push you toward anything, and our team does not work on commission.
Brad, Owner, Mattress Miracle (since 1987): "We talk to customers every day who are trying everything to sleep better. Cherries, magnesium, white noise, you name it. And those things can genuinely help. But I always ask: what is your mattress doing? Because if your body is not properly supported and you are overheating or aching, you are fighting uphill."
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Call 519-770-0001Frequently Asked Questions
How long does it take for cherries to make you sleepy?
Most people who notice an effect from tart cherry juice or cherries report it within one to two weeks of consistent daily consumption, rather than after a single serving. Melatonin from food is absorbed gradually, so a regular evening habit tends to be more effective than an occasional large dose. Effects on sleep duration and quality were measurable after two weeks in the main clinical studies.
Can I use cherry supplements instead of juice or fruit?
Tart cherry capsules and powders are available and contain similar compounds, but the research base is thinner than for juice concentrate. The bioavailability of melatonin from whole food or juice is generally well-supported. If you choose supplements, look for products standardised to melatonin and anthocyanin content and follow label guidance on dosing.
Are there any side effects of eating cherries for sleep?
For most people, eating cherries or drinking cherry juice in moderate amounts is safe and well-tolerated. Cherries do contain sorbitol, a sugar alcohol that can cause digestive discomfort in large quantities, particularly in people sensitive to FODMAPs. If you experience bloating or loose stools, reduce the portion. Cherry juice concentrate is also moderately high in natural sugar, so people managing blood sugar should account for that.
Do sweet cherries work as well as tart cherries for sleep?
Sweet cherries (Bing, Rainier) do contain melatonin and tryptophan, but at lower concentrations than tart Montmorency varieties. The clinical evidence for sleep improvement comes from tart cherry research specifically. Sweet cherries eaten in the evening can still be a nutritious, sleep-supporting food, but if your goal is specifically to boost melatonin, tart varieties are the better choice.
Should I eat cherries every night for sleep, or just occasionally?
The research suggests consistent daily consumption is more effective than occasional use. The studies showing improved sleep time and quality used twice-daily dosing over two weeks. Cherries are a nutritious food, so there is no reason not to include them regularly in your diet, particularly in the evening as part of a wind-down routine.
Sources
- Howatson, G., et al. (2012). Effect of tart cherry juice (Prunus cerasus) on melatonin levels and enhanced sleep quality. European Journal of Nutrition, 51(8), 909-916. doi.org/10.1007/s00394-011-0263-7
- Pigeon, W.R., et al. (2010). Effects of a tart cherry juice beverage on the sleep of older adults with insomnia: a pilot study. Journal of Medicinal Food, 13(3), 579-583. doi.org/10.1089/jmf.2009.0096
- Burkhardt, S., et al. (2001). Detection and quantification of the antioxidant melatonin in Montmorency and Balaton tart cherries (Prunus cerasus). Journal of Agricultural and Food Chemistry, 49(10), 4898-4902. doi.org/10.1021/jf010321+
- Garrido, M., et al. (2010). Jerte valley cherry-enriched diets improve nocturnal rest and increase 6-sulfatoxymelatonin and total antioxidant capacity in the urine of middle-aged and elderly humans. The Journals of Gerontology, 65(9), 909-914. doi.org/10.1093/gerona/glq099
- Pattison, D.J., et al. (2004). The role of diet in susceptibility to rheumatoid arthritis: a systematic review. Journal of Rheumatology, 31(7), 1310-1319.
- Reiter, R.J., et al. (2005). Melatonin in walnuts: influence on levels of melatonin and total antioxidant capacity of blood. Nutrition, 21(9), 920-924. doi.org/10.1016/j.nut.2005.02.005
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