2012年9月23日 星期日

Melatonin - The Miraculous Virtues?


First recognized in 1958, melatonin is a natural hormone produced by the pineal gland, a gland in the center of the brain, and whose main role is to control the body's circadian rhythm, an internal system that regulates the cycles of falling asleep and waking. Melatonin is a powerful antioxidant. All humans and most animals secrete melatonin, especially during childhood. natural levels of melatonin vary widely. Approximately 1% of the population has low rates, and 1% in this rate 500 times higher than normal. These effects have no specific effect on health or sleep.

Action of melatonin in the body

The role of melatonin seems to be to control the cycles of sleep and waking. It allows the brain to regulate its internal clock and the cycle of sleep and wakefulness. It also acts on digestive functions as well as to the level of hormones associated with reproduction in women, which determines the setting of menstrual cycles and menopause.

The body produces melatonin when the daylight decreases and reaches its peak between 2 and 4 am.

A natural and safe sedative

Melatonin is particularly effective as a sedative. Various research indicates that melatonin facilitates sleep and improves sleep quality by reducing the number of awakenings during the night. It may be useful in cases of pain or stressful night. It is particularly useful against the effects of jet lag or people who work at night, to regain regular sleep cycles.

Other properties

There's many other beneficial effects of melatonin: to release arthritis pain, stress, migraine, alcoholism, heart disease, cancer, menopause, etc.

All these claims can not be supported by research or clinical studies. However, some properties could be confirmed by research:

Aging

A study of older mice revealed that administration of an additional night melatonin prolonged their life by 25%. But no research has been conducted on humans.

Immune system

Preliminary results of some studies, melatonin may enhance the immune system and has a higher antioxidant capacity than beta-carotene and vitamins C and E against damage caused by free radicals that cause heart disease, and cataracts other degenerative diseases.

Cancer

In conjunction with other drugs against cancer, melatonin would promote the destruction of malignant cells.

Cardiovascular

A 1997 study in Italy showed the beneficial effects of melatonin on blood vessels and the risk of stroke or heart attack.

Alzheimer's and Parkinson's

Some reports indicate that melatonin could reduce neurological damage caused by Alzheimer's and Parkinson's.

Conclusion

Melatonin promotes sleep and short-term use appears safe. However, more research is needed to determine the effectiveness and long-term safety of melatonin.

Additional information:

For appropriate use of melatonin is very important to know which supplement use (regardless of brand), the dose and especially with what other natural complement it must be consumed to be effective.




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