Macronutrients are nutrients that provide calories. Calories are used as energy in your body. Nutrients are substances needed for growing, digestion, and other body functions. Since “macro” means large, macronutrients are nutrients needed in large amounts. There are three categories of macronutrients:
- Carbohydrates
- Proteins
- Fats
Carbohydrates
- They are the body’s primary sources of energy.
- They are body’s preferred energy source.
- Every cell and tissue in the body can use glucose (simple form carbohydrates) for energy.
- Prevents the body from using protein as an energy source.
- Dietary fibres in carbs contribute to the overall health of the colon and some play a role in regulating blood sugar levels.
- Good source – rye bread, beans, quinoa, oats, lentils, fruits, whole grains bread, sweet potatoes, bran flakes, pinto beans, oatmeal, navy beans, whole grain pasta.
Protein
- They are building block of tissue.
- Essential for the growth and repair of tissue.
- Important for making hormones and enzymes.
- Can be used as an energy source when energy from carbs is limited.
- Every cell in the body contains protein and is used in the formation of many molecules essential for life.
- Good source – almonds, say beans, beans, peanuts, nuts, fish, eggs, chicken, seeds, turkey, tofu, navy beans, kidney beans.
Fats
- The body’s insulator and energy source.
- It helps the absorption of fat-soluble vitamins (A, E & K).
- It helps the body store energy. Excess fat storage may lead to health complications.
- Essential fats play an important tole in basic metabolism, and may help present heart disease.
- Good source – walnuts, avocado, tuna, flax seeds, canola oil, fish, peanuts, soybean oil, sesame seeds, olive oil, cashews.


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