SUNLIGHT AND VITAMIN D: THE BONE AND CANCER CONNECTIONS

摘要

Vitamin D plays an essential role for calcium metabolism and bone health. It has been estimated that 90 to 95/100 of our vitamin D requirement comes from casual exposure to sunlight. There is a wide variety of factors that strongly influence the cutaneous production of vitamin D. These include melanin pigmentation, latitude, time of day, sunscreen use, and aging. There is an association with increased risk and mortality to breast, colon, and prostate cancer.