Melatonin is necessary for regulating the human sleep-wake cycle
the verdict
SUPPORTED
the evidence backs this
confidence 81/100
Current scientific literature consistently demonstrates that melatonin acts as a crucial neurohormone and circadian synchronizer that plays a central role in regulating the human sleep-wake cycle.
Evidence for · 3
Effects of melatonin on the circadian functions of sleep-wake cycle, metabolism, hormonal regulation and immune activity: A recent review
2023 · cited by 9
This review highlights that melatonin acts as a molecular regulator of the circadian clock and that the sleep-wake cycle depends on melatonin levels.
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More for · 2
Melatonin and sleep: Exploring its role in regulating the circadian rhythm and sleep-wake cycle
2026 · cited by 3
This paper notes that melatonin plays a pivotal role in modulating circadian rhythms and facilitating sleep onset and maintenance.
Rhythms of life: melatonin, nutrition, sleep, and antioxidant strategies for healthy aging.
2026 · cited by 0
This review emphasizes that melatonin serves as the primary hormonal signal of darkness and plays a central role in maintaining circadian synchrony and regulating sleep.