title: Vitamin D: metamorphosis from nutrient to hormonal system.
mesh_terms: D000328:Adult; D000368:Aged; D000818:Animals; D002112:Calcifediol; D002117:Calcitriol; D002648:Child; D002762:Cholecalciferol / Q000378:metabolism / Q000031:analogs & derivatives; D003684:Dehydrocholesterols / Q000528:radiation effects; D004100:Dihydroxycholecalciferols / Q000378:metabolism*; D004872:Ergocalciferols / Q000378:metabolism / Q000627:therapeutic use; D005260:Female; D006801:Humans; D006887:Hydroxycholecalciferols / Q000097:blood / Q000378:metabolism*; D007231:Infant, Newborn; D008099:Liver / Q000378:metabolism; D009751:Nutritional Requirements; D011247:Pregnancy; D012867:Skin / Q000378:metabolism; D013045:Species Specificity; D014466:Ultraviolet Rays; D014807:Vitamin D / Q000378:metabolism*; D014808:Vitamin D Deficiency / Q000209:etiology* / Q000517:prevention & control
chemical_list: D003684:Dehydrocholesterols; D004100:Dihydroxycholecalciferols; D004872:Ergocalciferols; D006887:Hydroxycholecalciferols; D014807:Vitamin D; D002762:Cholecalciferol; C016705:7-dehydrocholesterol; D002117:Calcitriol; C025168:previtamin D(3); D002112:Calcifediol