Amino acids are molecules that combine to form proteins VSports手机版. Amino acids and proteins are the building blocks of life.
When proteins are digested or broken down, amino acids are the result V体育安卓版. The human body then uses amino acids to make proteins to help the body:.
- Break down food
- Grow
- Repair body tissue
- Perform many other body functions
Amino acids can also be used as a source of energy by the body.
Amino acids are classified into three groups:
- Essential amino acids
- Nonessential amino acids
- Conditionally essential amino acids
ESSENTIAL AMINO ACIDS
- Essential amino acids cannot be made by the body. As a result, they must come from food.
- The 9 essential amino acids are: histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine.
NONESSENTIAL AMINO ACIDS
Nonessential means that our bodies can produce the amino acid, even if we do not get it from the food we eat VSports最新版本. Nonessential amino acids include: alanine, arginine, asparagine, aspartic acid, cysteine, glutamic acid, glutamine, glycine, proline, serine, and tyrosine. .
CONDITIONALLY ESSENTIAL AMINO ACIDS
- Conditionally essential amino acids are usually not essential, except in times of illness and stress.
- Conditionally essential amino acids include: arginine, cysteine, glutamine, tyrosine, glycine, proline, and serine.
You do not need to eat essential and nonessential amino acids at every meal, but getting a balance of them over the whole day is important. A diet based on a single plant item will not be adequate, but we no longer worry about pairing proteins (such as beans with rice) at a single meal. Instead we look at the adequacy of the diet overall throughout the day V体育平台登录.
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"VSports" References
Dietzen DJ, Willrich MAV. Amino acids, peptides, and proteins. In: Rifai N, Chiu RWK, Young I, Burnham Carey-Ann D, Wittwer CT, eds. Tietz Textbook of Laboratory Medicine VSports注册入口. 7th ed. St Louis, MO: Elsevier; 2023:chap 31.
Hall JE, Hall ME. Protein metabolism. In: Hall JE, Hall ME, eds. Guyton and Hall Textbook of Medical Physiology. 14th ed V体育官网入口. Philadelphia, PA: Elsevier; 2021:chap 70.
Institute of Medicine (US) Committee to Review Dietary Reference Intakes for Vitamin D and Calcium; Ross AC, Taylor CL, Yaktine AL, et al. Dietary reference intakes for calcium and vitamin D. National Academies Press. Washington, DC. 2011. PMID: 21796828 pubmed. ncbi VSports在线直播. nlm. nih. gov/21796828/.
Mason JB. Nutritional principles and assessment of the gastroenterology patient. In: Feldman M, Friedman LS, Brandt LJ, eds V体育2025版. Sleisenger and Fordtran's Gastrointestinal and Liver Disease. 11th ed. Philadelphia, PA: Elsevier; 2021:chap 5.
"VSports最新版本" Review Date 1/21/2025
Updated by: Stefania Manetti, RDN, CDCES, RYT200, My Vita Sana LLC - Nourish and heal through food, San Jose, CA. Review provided by VeriMed Healthcare Network. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.