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Melatonin is a hormone naturally produced by the pineal gland in the brain. It plays an important role in regulating the body’s internal clock (circadian rhythm) and the sleep–wake cycle.
Melatonin production increases when environmental light decreases, especially at night, helping the body feel sleepy and prepare for sleep.
How Melatonin Works in the Body
- Melatonin levels begin to rise in the evening (around 9:00–10:00 PM)
- Peak levels occur during the night (2:00–4:00 AM)
- Levels decrease toward morning, allowing natural awakening
Exposure to blue light from mobile phones or computer screens can suppress melatonin production and make it harder to fall asleep.
Melatonin Supplements
Melatonin supplements are widely used to help improve sleep, particularly in individuals with disrupted sleep cycles, such as:
- Jet lag
- Shift work disorder (night-shift workers)
- Certain types of insomnia
- Older adults with reduced natural melatonin levels
Research suggests that low doses (0.5–5 mg) taken 30–60 minutes before bedtime may help improve sleep quality, especially for sleep problems related to time-zone changes.
Should You Take Melatonin Supplements?
- When It May Be Helpful
- Short-term use, such as adjusting sleep schedules after traveling across time zones
- Certain types of insomnia (e.g., primary insomnia or delayed sleep phase syndrome)
- Older adults experiencing poorer sleep quality
- When to Use with Caution
- Not recommended as a nightly long-term sleeping aid
- Possible side effects include headache, morning drowsiness, and vivid dreams
- May interact with certain medications, such as blood thinners
Natural Ways to Support Melatonin Production
- Maintain a consistent sleep schedule
- Avoid blue light exposure before bedtime
- Consume foods rich in natural precursors, such as cherries, grapes, bananas, tomatoes, and walnuts
- Keep the bedroom dark and quiet
Summary
Melatonin is a natural hormone essential for regulating sleep. Melatonin supplements may be beneficial in certain situations, such as jet lag or specific types of insomnia, but should not be used long-term without medical advice.
Improving sleep habits remains the safest and most effective approach for better sleep quality.
