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Food sources of protein and the function of protein and amino acids in the body
Protein function:
• Protein should account for 10% to 20% of the calories consumed each day. Protein is essential to the structure of red blood cells, for the proper functioning of antibodies resisting infection, for the regulation of enzymes and hormones, for growth, and for the repair of body tissue.
Protein sources:
• Amino acids are the building blocks of protein and are found in a variety of foods. Meat, milk, cheese, and egg are complete proteins that have all the essential amino acids. Other sources of protein include whole grains, rice, corn, beans, legumes, oatmeal, peas, and peanut butter. For vegetarians, vegans and/or those who do not eat meat, fish, eggs, or dairy products, it is important to eat a variety of these other foods in order to get enough protein.
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