自从1922年发现维生素D与佝偻病有关以来,一直认为它是不经体内代谢而直接在体内发挥作用的一种脂溶性维生素,也认为它是不能由人体制造而必须由食物中摄取的物质。经典的研究已确立维生素D可促进肠钙和磷酸盐的吸收,并可调节骨钙的移动,维生素D用这样的方式保持着血钙和磷的适宜水平,以达到骨母组织和软骨组织的正常钙 Since it was discovered in 1922 that vitamin D was associated with rickets, it has long been considered a fat-soluble vitamin that works directly in the body without metabolism and is considered to be a substance that can not be produced by the body and must be ingested by food. Classical studies have established that vitamin D can promote the absorption of intestinal calcium and phosphate, and can regulate the movement of bone calcium, vitamin D in such a way to maintain the appropriate level of calcium and phosphorus in order to achieve bone and cartilage tissue Normal calcium