Elderly people also have to be ... careful about getting enough of all the essential nutrients ... many older people eat less. The guidelines stress meals based on the basic food groups and a reduction in the consumption of fats, oils, sugars, sweets, alcohol, and other foods that are high in calories but low in other nutrients. Some elderly men and women who take certain medications that ... nutrient intake also may require supplements. Such supplements, however, should be taken only under the guidance of a physician.