Melatonin is a hormone produced by a gland at the base of the brain, the pineal gland or epiphyses. The discovery of this hormone from the end of the '50s. Its presence in almost all living things, from protozoa, which are the basis of the evolutionary ladder, up the man, he did think about a possible role of "biological control" of seasonal rhythms in some birds, in fact, the production melatonin is linked to migration in some mammals and the mating season and lethargy.
The secretion of melatonin follows a daily rhythm: the evening begins, reaches its peak during the night, down to a minimum in the morning and remains very low during the day. In the dark, when the nerve cells of the retina are no longer affected by light, the pineal gland is stimulated to produce melatonin. Thanks go to the secretion of this hormone, based on the alternation of light and dark, the organism is organized rhythms of sleep and wakefulness. The hormone also is highest in early childhood, it slows down after 20 years and begins to decrease from 45 years onwards, until it disappears almost entirely in old age.
Initially it was used to regulate sleep in blind people, who, having no perception the alternation of day or night, may experience problems related to phase shift the biological clock as malaise, fatigue, decreased appetite and difficulty sleeping. Similar problems may also occur in some conditions, such as in those who make long trips through intercontinental different time zones, the term "jet lag" is just the set of disorders that occur as a result of rapid crossing of multiple time times and is a consequence of the phase of our biological clock. This "mismatch" was in fact made in relation to impaired production of melatonin.
Some experimental studies have suggested that melatonin may influence favorably the immune system and be useful in treating diseases such as cancer and AIDS. Certain assumptions were made about the likely function as an antioxidant, as an antidepressant and prevention of cardiovascular disease. In the absence of controlled studies, and being seen merely as products of these observations, the possible use of melatonin in these fields is still dimostrare.La melatonin promotes vivid dreams and can lead to clarity, we recommend a tablet or two before coricarsi.Puoi buy it in pharmacies or at least pure and supermercati.Consiglio melatonin 3mg.
