Eat a balanced diet that contains a variety of foods. That way you will probably get all the vitamins and other nutrients you need. A balanced diet should include:

• Three to five servings of vegetables.
  One serving equals:
  1 cup of raw, leafy greens
  1/2 cup of other vegetables.
• Two to four servings of fruits.
  One serving equals:
  One medium apple, orange, or banana
  1/2 cup of small or diced fruit
  3/4 cup of juice.
• Six to eleven servings of carbohydrates.
  These include breads, cereals, rice, and pastas.
  The following each count as one serving:
  One slice of bread
  Half of a bun, bagel, or English muffin
  1 ounce of dry cereal
  1/2 cup of cooked cereal, rice, or pasta.
• Two to three servings of dairy products,
  such as milk, yogurt, and cheese.
  One serving equals:
  1 cup of milk or yogurt
  About 1 1/2 ounces of cheese.
• Two to three servings of protein.
  This includes meat, poultry, fish, dry beans and peas, eggs, and nuts.
  One serving equals:
  3 ounces—the size of a deck of cards—of cooked lean beef or chicken
  One medium egg
  1 cup of dry beans.