Vitamin, Body Supplement, Nutritional Supplement: Vital Vitamin D
Vitamin D is not like other vitamins. Because the body can manufacture this nutrient, in fact, vitamin D fails to meet the classic definition of a vitamin. Vitamin D is manufactured in the skin, with ultraviolet light driving the process. With regular exposure to sunlight, most people can manufacture enough of this vitamin to meet all of their needs. People who do not get enough year-round exposure, however, may require dietary D as well. Certain groups, including older people, have difficulty producing vitamin D themselves and may also require dietary D.
While rickets, a disease caused by a vitamin D deficiency, has been around for thousands of years, our knowledge of the vitamin itself has a relatively short history. It was first isolated and synthesized. Read the rest of this entry »
