LYCOS RETRIEVER 
Melatonin: Pineal Gland
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Melatonin is a hormone produced by the pineal gland of all mammals, including humans. The pineal gland is a small, light-sensitive organ located in the brain that secretes melatonin only during darkness. Humans begin producing melatonin as early as 3 months old. The production of melatonin increases until about age 20 at which point melatonin production begins to decrease.
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Melatonin is a hormone (N-acetyl-5 methoxytryptamine) produced especially at night in the pineal gland. Its secretion is stimulated by the dark and inhibited by light. Tryptophan is converted to serotonin and finally converted to melatonin which is an Indole. The suprachiasmatic nuclei (SCN) of the hypothalamus have melatonin receptors and melatonin may have a direct action on SCN to influence "circadian" rhythms. (Weaver et al., 1993). Melatonin is metabolised to 6-hydroxy-mel in the liver and the main metabolite excreted is 6-sulphatoxy-mel.
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Melatonin is a natural hormone that your body produces in the pineal gland located in the brain. Through sight, and the amount of light we are exposed to (light – dark cycle), the pineal gland responds by starting to produce melatonin as it gets dark to allow you to begin to slow down, this makes the sleep state more inviting. As the production rate beings to increase your body temperature drops and sleep onset begins. As daybreak begins, and it becomes brighter out side you begin to wake and the production of melatonin decreases to a point where it is less detectable during the waking state.
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Melatonin is a hormone secrete from pineal gland in the brain. The Melatonin helps to maintain the wake-sleep cycle of living organisms. To grab a good sleep Melatonin becomes essential. The Melatonin reaction becomes active ones the light goes dark. It was discovered by the scientists in 1959. Since then research on Melatonin has been carrying.
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Melatonin is a metabolic hormone made in the pineal gland, retina, and intestines. Melatonin is released into the blood stream by the pineal gland (which resides in the brain) to set your bodies biological clock and initiate sleep. Darkness stimulates the pineal gland and causes it to produce more melatonin. Day light stops your body’s production of melatonin. Melatonin helps to promote healthy sleep patterns.** Melatonin ... protects cells from free radical damage, and directs the release of growth and sex hormones.** Vitamin B6 plays an important role in brain chemistry and nervous system function.**
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Melatonin is a natural hormone produced by the pineal gland. It assists in setting and controlling the clock that regulates the body's natural rhythms. Supplementation is useful for inducing sleep and curing jet lag. In this regard, the substance enhances the REM phase of sleep. But it has other benfits as examined by the author in this highly readable book.
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Pineal Gland