A small study suggests that melatonin may protect against age-related diseases. People taking 5 mg daily for one month significantly increased antioxidant defense in red blood cells and decreased indicators of cell aging. The researchers say melatonin may "prevent age-related diseases and prolong the lifespan and improve the quality of life of elderly people."
Source: J Pineal Res, 2007;42(2):153-8.
