1. Melatonin helps to improve sleep

According to the statistics of the US Centers for Disease Control and Prevention, about 7 million Americans have chronic sleep problems. Out of the desire for sweet sleep, many people are trying to take the hyped melatonin to improve their sleep. The national health interview survey found that its usage in the United States more than doubled between 27 and 212.

Melatonin is a hormone naturally produced by human body, which lets us know it's time to go to bed. Melatonin naturally produced in human body can not induce sleep, but biochemical signals related to darkness tell the brain that night is coming. Melatonin is released by the body a few hours before going to bed, which helps to regulate the sleep/wake cycle.

2. Melatonin can regulate the circadian rhythm

Although Melatonin is the only over-the-counter sleep aid available on the market, scientific research shows that taking it will be of great help only when a person's natural melatonin secretion function is abnormal-this happens to people who work at night or have jet lag.

Although taking melatonin can make people sleepy, it is not a good hypnotic unless you try to sleep at the wrong time, such as shift workers who sleep during the day or those who try to sleep in a new time zone after international travel.

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