Exercise helps active older people maintain lean body mass, although lean body mass decreases somewhat even in those who exercise extensively. The higher the LBM, the more a person can eat without gaining weight and the more likely he or she will obtain an adequate supply of all nutrients. Although older adults need fewer total calories, they have an increased need for certain vitamins and minerals. This increased need must therefore be satisfied with a lower overall intake of food. Nutrient-poor foods like sweets and alcohol should be limited.
Water is an important nutrient that is frequently overlooked.
The thirst response decreases with age so the elderly should be encouraged to make a habit of drinking water and other fluids throughout the day.