Melatonin is a hormone naturally produced by the body. It has been found, and is often used, in helping to promote sleep and to improve the immune system, helping to protect us from certain diseases. Some evidence shows that melatonin may also help in preventing and reducing the size of tumors.
A Review of the Research
In a study published in the May/June 2008 issue of the Medical Science Journal, mice were first treated with benzo(a)pyrene, a cancer-causing chemical. Some of the mice...

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