Sunlight, vitamin D, sexual performance and fertility, Vitamin D Deficiency - 0 views
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Matti Narkia on 21 Sep 09In 1939, Dr. Abraham Myerson measured initial levels of circulating testosterone in men and exposed their various body parts to UVB light. After five days of chest exposure sufficient to cause reddening, circulating testosterone increased by 120%. After eight days without additional UV exposure, testosterone returned to initial levels. When the genital area was exposed, testosterone levels increased by 200%!