The Vitamins in Health and Disease: A Modern Reappraisal

absorption acid deficiency active addition adequate amounts anaemia animal appears ascorbic acid biochemical biotin blood body bone cause cent changes chemical clinical co-enzyme compounds countries daily depends determination developed diet dietary disease disorders doses effect enzyme estimation evidence example excretion exist extensive factor Figure folic acid function given glucose growth haemorrhagic human important increased infections intake intestinal known lesions levels liver losses metabolism methods milk natural nicotinic acid normal nutritional occur organic pantothenic acid particularly patients phosphate preparation present probably problem produce protein pyridoxine reactions recent reduced requirements result riboflavine rickets scurvy seen severe shown signs skin sources specific stage storage Structural studies substances suggests symptoms synthesis Table therapy thiamine tion tissue tocopherol treatment typical usually various vegetables vitamin B12 vitamin deficiency vitamin K