Plates with colorful foods are more appealing. Fluid intake may also be a problem for the older adult and his or her nutritional needs. The older adult is at increased risk for dehydration because there is a gradual steady loss of body water as one ages. Also, the thirst signal to the brain becomes weaker with age. As a result, older adults need to remind themselves to drink, even if they don't feel thirsty.
Urinary incontinence is another factor.
The average adult should drink at least 6-8 cups of fluid each day to prevent dehydration. Too little fluid intake also affects the digestive system by slowing the passage of foods through the intestines and possibly causing constipation. This can cause discomfort. Even more seriously, dehydration may result in hospitalization for IV fluids and therefore costly medical bills. Another physical problem, which may result in poor nutrition in the elderly, is difficulty chewing.