It's secreted by the pineal gland, a pea-size structure at the center of the brain, as our eyes register the fall of darkness.
"At night melatonin is produced to help our bodies regulate our sleep-wake cycles. The amount of it produced by our body seems to lessen as we get older. Scientists believe this may be why young people have less problem sleeping than older people.
"Studies suggest that... supplements can hasten sleep and ease jet lag, without the hazards or side effects of prescription sleeping pills."
It may have many other uses and has been reported to make people feel better, strengthen the immune system, and reduce free radicals in the body.
for more
http://www.starherb.com/supplement.asp?catid=534
