Melatonin is a natural hormone produced by the pineal gland in your brain that helps regulate your 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 your body that it’s time to sleep
- Regulating body temperature
- Influencing other hormones
- Reducing dopamine levels that keep you awake
Studies have shown that supplemental melatonin can help with various sleep disorders, particularly in cases where natural melatonin production is disrupted by factors like jet lag or shift work.
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Last Updated: August 28, 2025
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