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the claim

Melatonin supplementation increases the amount of deep sleep in adults.

the verdict
INSUFFICIENT LEANING
Recorded sources
0 sources for · 2 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that melatonin supplementation increases the amount of deep sleep in adults?

Unclear. The retrieved items do not directly measure deep (slow-wave) sleep. One small polysomnography study in older adults found 5 mg melatonin increased Stage 2 light NREM sleep rather than deep sleep, and a review of melatonin for sleep disorders found clinically insignificant effects on sleep quality and architecture.

Verdict: PARTIAL LEAN · 0 sources for, 2 against · Last checked

The private library was unavailable for some searches in this check. Missing library results are not evidence against the claim.

Evidence against · 2
High dose melatonin increases sleep duration during nighttime and daytime sleep episodes in older adults
2022
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Duffy, J. F., Wang, W., Ronda, J. M., & Czeisler, C. A. (2022). High dose melatonin increases sleep duration during nighttime and daytime sleep episodes in older adults. doi.org. https://doi.org/10.1111/jpi.12801

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More against · 1
How effective is melatonin for aiding with sleep difficulty?
2011
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How effective is melatonin for aiding with sleep difficulty?. (2011). skeptics.stackexchange.com. https://skeptics.stackexchange.com/questions/1782/how-effective-is-melatonin-for-aiding-with-sleep-difficulty

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