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 production increases in the evening as darkness falls and decreases in the morning with light exposure.
The hormone works by:
- Signaling to the body that it’s time to sleep
- Regulating body temperature
- Influencing other hormones
- Affecting blood pressure
When taken as a supplement, melatonin can help adjust sleep timing and improve sleep quality, particularly in people with circadian rhythm disorders or jet lag.
✓ Expert Reviewed: This content has been reviewed by qualified professionals in the field.
Last Updated: August 4, 2025
Disclaimer: Content is for informational purposes only. Professional advice should be sought for specific situations.
Editorial Standards: All content follows strict editorial guidelines with fact-checking and expert review processes.