Tart cherry juice may improve sleep quantity and quality in older adults with self-reported insomnia
This protocol describes a randomized, double-blind, placebo-controlled, cross-over pilot study testing 16 oz. of tart cherry juice daily for 4 weeks in 20 older adults with self-reported insomnia. The study aims to evaluate feasibility and collect preliminary data on sleep quantity/quality and biomarkers related to melatonin, cortisol, serotonin, and inflammation.
This article is automatically generated from the structured evidence profile behind the claim above. Scores reflect the quality and quantity of available research, not clinical advice.
Tart cherry juice may improve sleep quantity and quality in older adults with self-reported insomnia The current body of evidence comprises 1 study, including 1 randomized controlled trial. EvidenceHub rates the overall confidence at 42/100 (low).
The Claim
Tart cherry juice may improve sleep quantity and quality in older adults with self-reported insomnia
This conclusion is most relevant to: Older adults with self-reported insomnia.
What the Research Shows
The conclusion draws on 1 linked study. Highlights from the cited literature:
- ▸CherryZZZ: A Protocol for a Randomized, Double-Blind, Placebo-Controlled, Cross-Over Pilot Study Testing Tart Cherry Juice in Older Adults with Self-Reported Insomnia. (Nutrients, 2026) —
How It Works
The proposed biological pathway:
- ▸Tart cherry juice contains melatonin and anti-inflammatory compounds
- ▸Consumption may increase circulating melatonin levels
- ▸May reduce cortisol and inflammatory markers
- ▸Result: Improved sleep quantity and quality
Who Might Benefit
Evidence fit by population:
- ▸Older adults with self-reported insomnia
Recommended Dose
16 oz. per day (8 oz. in the morning, 8 oz. at night)
Limitations & Caveats
Important context when interpreting this evidence:
- ▸This is a protocol paper; no results are reported yet
- ▸Small sample size (n=20) limits generalizability
- ▸Self-reported insomnia may not align with objective sleep measures
Frequently Asked Questions
What is the proposed dose of tart cherry juice for sleep improvement?▼
The protocol uses 16 oz. per day, split into 8 oz. in the morning and 8 oz. at night, for 4 weeks.
Who is the target population for this study?▼
Older adults with self-reported insomnia.
What outcomes are being measured in this pilot study?▼
Feasibility (recruitment, retention, compliance, safety), sleep quantity/quality via diaries and wearable devices, and biomarkers such as melatonin, cortisol, serotonin, and inflammation.
Is this study a randomized controlled trial?▼
Yes, it is a randomized, double-blind, placebo-controlled, cross-over pilot study.
References
- 1.VanderMark E, Baniassadi A, Wolfe A, Cladis DP, Dufour AB, Millar CL. “CherryZZZ: A Protocol for a Randomized, Double-Blind, Placebo-Controlled, Cross-Over Pilot Study Testing Tart Cherry Juice in Older Adults with Self-Reported Insomnia..” Nutrients, 2026. PMID: 41901097 DOI: 10.3390/nu18060922