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Summary
Protein is in every cell in the body. Our bodies need protein from the foods we eat to build and maintain bones, muscles and skin. We get proteins in our diet from meat, dairy products, nuts, and certain grains and beans. Proteins from meat and other animal products are complete proteins. This means they supply all of the amino acids the body can't make on its own. Most plant proteins are incomplete. You should eat different types of plant proteins every day to get all of the amino acids your body needs.
It is important to get enough dietary protein. You need to eat protein every day, because your body doesn't store it the way it stores fats or carbohydrates. How much you need depends on your age, sex, health, and level of physical activity. Most Americans eat enough protein in their diet.
Related Issues
- High-Protein Diets: Are They Safe? (Mayo Foundation for Medical Education and Research) Also in Spanish
Specifics
- Vary Your Protein Routine (Department of Agriculture)
Clinical Trials
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ClinicalTrials.gov: Dietary Proteins
(National Institutes of Health)
Journal Articles References and abstracts from MEDLINE/PubMed (National Library of Medicine)
- Article: Association between creatine phosphokinase level within normal range and bone mineral...
- Article: Dietary protein intake and all-cause mortality: results from The Kawasaki Aging...
- Article: Robust increase in glucagon secretion after oral protein intake, but not...
- Dietary Proteins -- see more articles
Patient Handouts
- Kwashiorkor (Medical Encyclopedia) Also in Spanish
- Protein in diet (Medical Encyclopedia) Also in Spanish