Carbohydrates

Food Sources:
Complex carbohydrates are a good source of minerals, vitamins , and fiber . They are starches found in:
  • breads
  • cereals
  • starchy vegetables
  • legumes
  • rice
  • pastas

Simple carbohydrates also contain vitamins and minerals. They naturally occur in:

  • fruits
  • milk and milk products
  • vegetables

Simple carbohydrates are also found in processed and refined sugars such as:

  • candy
  • honey
  • table sugar
  • syrups
  • regular carbonated beverages

Refined sugars provide calories, but lack vitamins, minerals, and fiber.

Functions:
The primary function of carbohydrates is to provide energy for the body, especially the brain and the nervous system. The body breaks down starches and sugars into a substance called glucose, which is used for energy by the body.

Recommendations:
It is recommended that 50 to 60% of our total calories come from carbohydrates, preferably from complex carbohydrates (starches) and naturally occurring sugars rather than processed or refined sugars.

High-sugar foods are simple carbohydrates that provide calories, but minimal nutritional benefits. Within this category, healthy choices include fruit and low-fat or skim milk.

To increase complex carbohydrates:

  • Eat more fruits and vegetables.
  • Eat more whole grains, rice, breads and cereals.
  • Eat more beans, lentils, and dried peas.

Ounce for ounce, starches contain the same number of calories as protein and less than half the calories of fat . Carbohydrates provide 4 Calories per gram, and fat provides 9 Calories per gram. Therefore, it is wise to limit processed and refined sugars.

Here are recommended serving sizes for foods high in carbohydrate:

  • vegetables: 1 cup of raw vegetables, or 1/2 cup cooked vegetables, or 3/4 cup of vegetable juice
  • fruits: 1 medium size fruit (such as 1 medium apple or 1 medium orange), 1/2 cup of a canned or chopped fruit, or 3/4 cup of fruit juice
  • breads and cereals: 1 slice of bread; 1 ounce or 2/3 cup of ready-to-eat cereal; 1/2 cup of cooked rice, pasta or cereal; 1/2 cup of cooked dry beans, lentils, or dried peas
  • dairy: 1 cup of skim or lowfat milk

For information about how many servings are recommended see the food guide pyramid .

Here is a sample 2,000 Calorie menu of which 50 to 60% of its total calories are from carbohydrates:

  • breakfast
    • 1 cup of raspberries
    • 1 1/2 cups of unsweetened cereal, with 1/2 sliced banana
    • 1 cup of skim milk
    • 1 slice of whole wheat toast
    • 1 teaspoon of margarine
    • 1 teaspoon of jelly
    • coffee or tea

  • lunch
    • turkey pita pocket sandwich (2 slices of whole wheat pita bread, 3 ounces of lean turkey breast )
    • 1/2 cup of shredded lettuce
    • 1/2 cup of diced tomatoes
    • 1/2 cup of green peppers
    • 1 tablespoon of salad dressing
    • 1 cup of skim milk
    • 2 fresh medium-sized peaches

  • dinner
    • 4 ounces of broiled salmon with 3 tablespoons of lemon juice and sprinkled with paprika
    • 1 cup of pasta
    • 1 dinner roll
    • 6 steamed broccoli stalks with sprinkled black pepper
    • salad:
      • 1 cup lettuce
      • 1/4 cup of sliced mushrooms
      • 1/2 cup of sliced tomatoes
      • 1/2 cup of sliced carrots
      • 1 tablespoon of salad dressing

    • 1/2 cup frozen unsweetened strawberries, sweetened with 1 teaspoon of sugar
    • 1-inch slice of angel food cake
    • 1 cup of skim milk



Side Effects:
Excessive carbohydrates can cause an increase in the total caloric intake, causing obesity .

Deficient carbohydrates can cause a lack of calories ( malnutrition ), or excessive intake of fats to make up the calories.

Note: When speaking of nutrition, 1 Calorie = 1,000 calories or 1 kcal.


The original "Four Food Groups" has been replaced with the "Food Guide Pyramid". This illustrates the relative proportions of different foods that make up a nutritious, well-balanced diet.