Avoid caffeinated beverages such as coffee and tea, and alcohol. They diuretics and cause you to lose more fluids. Drinking plenty of fluids also helps your body avoid the possible buildup of certain medications you might be taking. If you are dehydrated, those medicines could become more concentrated and cause unintended side effects. People who are taking diuretic medications for fluid retention, such as people with congestive heart failure, should ask their doctors how much fluid to drink.
Many older adults produce less saliva that can hinder chewing and swallowing.
Help rid your body of waste and reduce the chances of constipation. Keep your joints lubricated and cushioned so you don't stiffen up. Keep your kidneys, which work less efficiently as you age, functioning properly.