To ward off dehydration, healthy people should get 30-to-50 ounces of water per day (about 1-to-1.5 liters), but not all at once. The kidneys lose some ability to eliminate water with age. It’s important to stay hydrated gradually, throughout the day. One can do that by drinking water or juices, and eating water-rich foods such as salads, fruit, and applesauce. An easy way to stay hydrated gradually is by getting fluids at meals, with medicine, and socially.
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