Melatonin is a hormone made by the pineal gland in the brain that is a key component in regulating the sleep-wake cycle in the human body.Very small amounts of melatonin are found in foods like meats, grains, fruits and vegetables. It is also produced in larger quantities by commercial manufacturing laboratories for use as a dietary supplement designed to help people suffering from insomnia or other sleep issues.The body has an internal clock that normally regulates how much melatonin is produced during different times of day. Melatonin levels rise during evening hours, stay high during the night and drop in the early morning hours.During the shorter days of the winter months or during seasonal time changes, the body's clock may be off and produce melatonin earlier or later than usual. As people age, the body may curtail or restrict melatonin production.Using a dietary supplement can allow the body to return to a normal sleep cycle. Others who may benefit from melatonin include those suffering from seasonal-affective disorder, those who work a night shift who must sleep during daylight hours and people recovering from medical procedures who are having difficulty resting comfortably.Melatonin is safe at suggested serving sizes.
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