Tart cherries have the strongest evidence for two things: improving sleep and reducing gout flare risk. Beyond those, they show promising but more mixed results for joint pain, blood pressure, and exercise recovery. Most research uses Montmorency tart cherries, either as juice, concentrate, or powdered supplements.
What makes tart cherries stand out nutritionally is their antioxidant content. They contain roughly 20 times more vitamin A and up to five times more antioxidants than sweet cherry varieties. The pigments responsible, called anthocyanins, are the same compounds that give tart cherries their deep red color and drive most of their health effects.
Sleep Quality
This is one of the best-supported benefits. In a study of adults over 50 with insomnia, drinking tart cherry juice twice daily increased total sleep time by 84 minutes as measured by overnight sleep monitoring. Sleep efficiency also improved significantly. A separate trial in adults 65 and older found a 62-minute reduction in the time spent awake after initially falling asleep. Even in younger, healthy volunteers, tart cherry juice added about 34 minutes of total sleep time and boosted sleep efficiency by 5 to 6%.
The mechanism is interesting. Tart cherry juice does contain melatonin, but the amount is tiny: roughly 0.135 micrograms per dose, far below the 0.5 to 5 milligrams typically used in melatonin supplements. The sleep benefits likely come from something else entirely. Tart cherry’s anthocyanins appear to slow the breakdown of tryptophan (a building block your body uses to make its own melatonin and serotonin), which may explain why the effects are more substantial than the melatonin content alone would predict.
Gout Flare Prevention
If you deal with gout, tart cherries are one of the few foods with direct evidence for reducing flares. Eating cherries over a two-day period was associated with a 35% lower risk of a gout attack. One study found that tart cherry juice reduced uric acid levels (the compound that crystallizes in joints during a flare) by 19.2%. Other trials have shown more modest reductions, dropping uric acid from about 8.4 to 8.2 mg/dL, so the effect varies. Still, cherries are one of the most consistently recommended dietary strategies for gout management.
Joint Pain and Inflammation
For osteoarthritis, the picture is more nuanced. In a randomized trial of people with mild to moderate knee osteoarthritis, tart cherry juice lowered CRP, a blood marker of inflammation. That drop in CRP was linked to improved pain and stiffness scores. However, the overall improvement in symptoms wasn’t statistically greater than what the placebo group experienced. In practical terms, tart cherry juice may help reduce underlying inflammation in your joints, but it’s unlikely to replace other pain management strategies on its own.
Blood Pressure and Cholesterol
A controlled trial in older adults found that tart cherry juice lowered systolic blood pressure (the top number) and LDL cholesterol. It did not significantly change diastolic blood pressure, HDL cholesterol, or insulin levels. This is a single trial rather than a large body of evidence, but the results align with what you’d expect from a food high in anthocyanins and potassium.
Exercise Recovery
Tart cherry is widely marketed for post-workout recovery, and there is some supporting evidence for endurance athletes. One study found a roughly 4.7% improvement in cycling time-trial performance after seven days of supplementation. However, other research has been less convincing. A recent study on repeated sprint exercise found that ten days of tart cherry powder supplementation made no difference in muscle soreness, muscle damage markers, jump height, or perceived readiness to train compared to placebo. The recovery benefits may depend on the type and intensity of exercise, and the evidence is not as strong as marketing often suggests.
How Much to Take
Clinical trials have used a wide range of doses, from 30 mL (about 1 ounce) to 240 mL (about 8 ounces) of tart cherry juice per day. Concentrate doses tend to be around 30 to 60 mL daily, typically diluted with water. Most sleep studies used juice twice a day, once in the morning and once in the evening, for at least two weeks. If you’re buying juice, look for 100% tart cherry juice or concentrate rather than blends with added sugar.
Capsules and powdered forms are also available, though fewer clinical trials have used them directly, making it harder to pin down equivalent dosing.
Digestive Side Effects
Tart cherries contain sorbitol, a natural sugar alcohol that can cause stomach pain, gas, diarrhea, and occasionally nausea in some people, especially at higher doses. If you have a sensitive stomach or irritable bowel issues, start with a smaller amount and see how you tolerate it. There is also preliminary evidence that tart cherry juice could interact with blood-thinning medications, so if you take anticoagulants, it’s worth discussing with your pharmacist before adding it as a daily supplement.