The Vitamins in Health and Disease: A Modern Reappraisal

abnormalities absorption adequate alcohol amino acids animal species antagonists ascorbic acid B₁ beri-beri biochemical biotin blood body bone cent CH2OH CH3 CH3 chemical choline clinical co-enzyme compounds COOH countries daily requirements Deficiency of vitamin dermatitis diet dietary disease disorders doses effect enzyme estimation evidence excretion factor fatty acids folic acid food Vitamin function glutamic acid growth haemorrhagic human Hypervitaminosis increased infants infections intake intestinal K₁ Lactation lesions levels liver losses megaloblastic metabolism methods methyl mg/day milk nicotinic acid normal occur oxidation pantothenic acid patients pellagra pernicious anaemia plasma pregnancy probably produce protein prothrombin pyridoxal phosphate pyridoxine pyridoxine deficiency reactions result riboflavine riboflavine deficiency rickets scurvy shown in Figure shown in Table signs skin soluble specific storage Structural formula substances symptoms synthesis thiamine deficiency tion tissue tocopherol tract tryptophan typical urine vegetables vita vitamin B12 vitamin content vitamin deficiency vitamin K