Should I take it?
Melatonin is a hormone primarily produced naturally by the pineal gland of mammals. In humans, the pineal gland is a very small organ located in the brain. Sensitive to light, it produces melatonin only during darkness -- with production increasing approximately an hour or two before an individual's customary sleeping times and then decreasing before usual awakening times. It is now believed that other body tissues, such as the retinas, also produce small amounts of melatonin. Children begin producing melatonin at about 3 months of age. Its production increases until about age 20 and then drops off as individuals age. By age 80, natural melatonin levels are estimated at 20% of their peak levels. Melatonin production also appears to be reduced in conditions such as dementia, which are usually associated with aging.
In humans, melatonin affects daily cycles, also called circadian rhythms, such as sleep and temperature. In other mammals, melatonin plays a role in seasonal changes such as hibernation. Melatonin also seems to promote growth and sexual maturity and it may assist in maintaining balance. Low levels of melatonin have been associated with depression, fibromyalgia, insomnia, some seizure disorders, and other conditions.
Supplemental melatonin should be synthetic ¯ derived from sources that are not animal or human. In the past, some melatonin products were made from animal tissue, which carried the risk of possible contamination with viruses and other toxins. Because of concerns with contamination and safety, Japan currently prohibits the sale of melatonin supplements and Britain restricts their use.
Thought this might be interesting maybe the mel is out of wack with people who take it...