Studies show that some older adults are deficient in vitamins B6, B12, and folate (a B vitamin). To guard against vitamin deficiencies, plan a diet that includes food sources of these nutrients.

It is also important to get adequate protein and calcium daily. Low-fat dairy products are rich sources of calcium. Two servings a day of 2 to 3 ounces of meat, chicken, or fish provide the protein you need. Other sources of protein include cooked dried beans, peanut butter, milk, and eggs.