Tart Cherry Juice for Sleep Quality

Research suggests that tart cherry juice may modestly improve sleep quality and duration, with several randomized controlled trials reporting benefits including increased total sleep time, improved sleep efficiency, and higher urinary melatonin levels in both healthy adults and individuals with insomnia. The proposed mechanisms include tart cherry's natural melatonin content and its potential to preserve tryptophan availability by inhibiting an enzyme that degrades it, as well as general anti-inflammatory effects, though the precise pathway remains under investigation. Multiple narrative reviews covering athletic and general populations consistently flag tart cherry juice as a promising dietary strategy for sleep, and a 2020 network meta-analysis of interventions for elderly insomnia patients found it outperformed control conditions, while also cautioning that overall confidence in the evidence was very low. Taken together, the body of evidence is directionally supportive but limited by small sample sizes, short intervention durations, and a relative scarcity of large-scale trials, meaning current findings should be considered preliminary rather than definitive.