Melatonin is a natural hormone produced by the pineal gland in the brain that helps regulate our sleep-wake cycle (circadian rhythm). According to research, melatonin levels naturally rise in the evening and fall in the morning.
The hormone works by:
- Signaling to the body that it’s time to sleep
- Regulating body temperature
- Influencing other hormones
- Managing immune system function
When taken as a supplement, melatonin can help adjust the body’s internal clock, particularly useful for: jet lag, shift work, and certain sleep disorders.
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Last Updated: September 9, 2025
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