Vitamin D is necessary for building and maintaining healthy bones. Your body makes vitamin D when direct sunlight converts a chemical women and vitamin d your skin into an active form of the vitamin calciferol. The amount of vitamin D your skin makes depends on many factors, including the time of day, season, latitude and your skin pigmentation.
Depending on where you live and your lifestyle, vitamin D production might decrease or be completely absent during the winter months.
Sunscreen, while important, also can decrease vitamin D production. The recommended daily amount of vitamin D is international units IU for children up to age 12 months, IU for ages 1 to 70 years, and IU for people over 70 years. Without vitamin D your bones can become soft, thin and brittle. Insufficient vitamin D is also connected to osteoporosis and some types of cancer. However, taking too much vitamin D can be harmful. Children age 9 years and older, adults, and pregnant and breast-feeding women who take more than 4, IU a day of vitamin D might experience:.
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Gangwar AK, et al. Indian Journal of Physiology and Pharmacology. Yin Y, et al. Nutrient biomarkers and vascular risk factors in subtypes of mild cognitive impairment: Wood JM, et al. A review of the literature. Annals of Clinical Psychiatry. Mayo Clinic Marketplace Check out these best-sellers and special offers on books and newsletters from Mayo Clinic, women and vitamin d.