Pistachios before bed: a natural sleep aid?
NCT ID NCT07651605
First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study tested whether eating 28 grams of pistachios (about 40 nuts) one hour before bedtime could help regulate the body's internal clock in 28 overweight young adults. Researchers measured melatonin levels, antioxidant activity, and sleep-wake patterns. The goal was to see if natural compounds in pistachios, like phyto-melatonin, can influence circadian rhythms.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
- Active substance
- pistachios (28 g daily, 1 hour before bedtime)
- What this could lead to
- If successful, this could suggest that eating pistachios before bed may help regulate the body's internal clock and improve sleep patterns.
- What could go wrong
- This is a small, completed study with only 28 participants, so results may not apply to everyone. The effect of pistachios on circadian rhythm is still uncertain and needs larger trials.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
-
Universidad Autónoma de Querétaro
Querétaro City, Querétaro, 76000, Mexico
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