Nutrition in the elderly.
D000368:Aged; D001206:Ascorbic Acid Deficiency / Q000209:etiology; D003677:Deficiency Diseases / Q000175:diagnosis / Q000209:etiology / Q000517:prevention & control; D004032:Diet / Q000009:adverse effects; D005260:Female; D005494:Folic Acid Deficiency / Q000209:etiology; D006801:Humans; D009751:Nutritional Requirements; D014804:Vitamin B Deficiency / Q000175:diagnosis; D014808:Vitamin D Deficiency / Q000209:etiology