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The natural hormone called melatonin plays an important role in regulating sleep. The brain secretes it in response to darkness to help the body relax and fall asleep. It also contributes to regulating the biological clock and the secretion of growth and sex hormones. Low levels of melatonin, especially in the elderly, Alzheimer's patients, and individuals with chronic diseases such as diabetes and cancer, can lead to sleep problems and an increased risk of related illnesses. Melatonin supplements can be used to adjust sleep schedules, particularly for travel or sleep disorders caused by aging. However, they may cause side effects such as daytime drowsiness and headaches. It is advisable to consult a doctor before use.
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