Nutrition and old age.
D000367:Age Factors; D000368:Aged; D001206:Ascorbic Acid Deficiency / Q000175:diagnosis / Q000453:epidemiology; D006801:Humans; D008875:Middle Aged; D009749:Nutrition Surveys; D009747:Nutritional Physiological Phenomena; D006113:United Kingdom; D014804:Vitamin B Deficiency / Q000453:epidemiology