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Optimum Nutrition by Stephanie Green

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CHAPTER7

Protein

In This Chapter

  • What is a protein?
  • The function of amino acids in the body
  • The process of protein digestion and absorption
  • Complete and incomplete proteins
  • How not eating enough protein affects health
  • What happens if you eat more protein than your body needs?

Protein is one of the three macronutrients along with fat and carbohydrates. The word protein comes from the Greek term for “primary,” proteios. All macronutrients are “energy” nutrients that provide calories. Protein, just like carbohydrates, provides 4 calories per gram.

Each cell in your body contains protein and it is involved in the development, maintenance, and ...

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