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 in response to light exposure.
The hormone works by:
- Binding to receptors in your brain that reduce nerve activity
- Decreasing dopamine levels that keep you awake
- Helping regulate your body temperature for optimal sleep
As a supplement, synthetic melatonin mimics this natural process, making it particularly helpful for people with disrupted sleep patterns due to jet lag, shift work, or sleep disorders.
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Last Updated: September 7, 2025
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