Philosophers and mystics throughout time have referred to the pineal gland as the “third eye.” The French philosopher Descartes even declared that the pineal gland is the seat of the human soul. Because of its special location near the center of the brain, between the two hemispheres, some people still attribute a special power to the pineal gland and associate it with the sixth chakra (also called Ajna or the third eye chakra in yoga).
Some also believe that it is a dormant organ that can be awakened to enable telepathic communication.
As it turns out, scientists now know that the pineal gland is a small endocrine gland about the size of a pea that, in addition to producing the hormone melatonin—which regulates our internal body clock and sleep cycle, is stimulated by darkness and inhibited by light.
How does melatonin work?
Melatonin levels peak at about 2 a.m. in normal, healthy young people and about 3 a.m. in elderly people. The maximum amount of melatonin released in the bloodstream of the elderly is only half of that in young adults, which is why many scientists and health professionals believe that melatonin levels are a good marker of aging and longevity.
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