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Melatonin: Hormones
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Melatonin is ... one of the hormones that controls the timing and release of female reproductive hormones. As a result, it helps determine when menstruation begins, the frequency and duration of menstrual cycles, and when menstruation ends (menopause).
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Melatonin is not only a natural mammalian hormone, it is widely found in nature, including foods such as oats (1.8nanogram melatonin per gram of oats). Although supplement doses a hundred times the typical 3mg per day have proven to be safe, higher doses may be unnecessary or even harmful.
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The pineal gland has been linked to the immune system and immunodepression has been counteracted by Melatonin administration. The thymus is one of the main targets of mel and its immunoenhancing effects may be mediated by opioids derived from T-helper cells,lymphokines and possibly pituitary hormones. Lymphokines such as gamma-interferon and IL2 as well as thymic hormones can modulate the synthesis of mel in the pineal gland.
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