Health and nutrition of the elderly.
D000368:Aged; D001206:Ascorbic Acid Deficiency; D003677:Deficiency Diseases; D005494:Folic Acid Deficiency; D006266:Health Education; D006801:Humans; D009747:Nutritional Physiological Phenomena; D010018:Osteomalacia / Q000209:etiology; D006113:United Kingdom