“Nuts are a great source of protein and monounsaturated fatty acids,” says Hincman, as well as much needed vitamin E. Examples of great choices include walnuts, almonds, and hazelnuts. Nuts are also very calorie-dense, however, so you need only a palmful for good nutrition and to feel satisfied — just one-half ounce of nuts is considered equivalent to one ounce of a typical protein choices, like chicken or beef. Hincman suggests extending the volume in a serving of nuts by adding in raisins or dried cranberries.
Consult your health care professional. Women of childbearing age may want to consider taking folic acid supplements to reduce the risk of having a pregnancy affected with neural tube defects. Many women and teenage girls don't get enough calcium or vitamin D, both of which are critical to healthy bones and avoiding osteoporosis. Some people with diabetes appear to benefit from chromium. Vegetarians, especially vegans, may want to consider supplements to obtain nutrients they aren't getting from animal products. 
×