A Answers (3)
Andrea Pennington, Integrative Medicine, answeredProteins are made up of amino acids and are essential for growth and repair in the body. They are the building blocks of muscles, enzymes and some hormones. A gram of protein contains four calories.
Academy of Nutrition and Dietetics answered
Your body uses the protein you eat in a variety of ways, including:
- Build and repair all tissues
- Form enzymes and hormones
- Form antibodies to fight infection
Boston Women's Health Book Collective, answered
Proteins are composed of molecules called amino acids, which, when joined in different combinations, make up most of the tissues in our bodies: muscles, organs, skin, nails, and hair, for example. They also make up many of the biochemicals, like enzymes and hormones, which help our bodies grow, heal, digest, and detoxify. There are twenty-three amino acids in the human body, nine of which are essential. Animal sources of protein - such as eggs, dairy products, and meat - contain all nine essential amino acids. Plant sources of proteins - such as beans, nuts, and seeds - lack some of the essential amino acids.
Individual needs for protein can vary greatly depending on age, activity level, genetics, or chronic/acute illness. Those of us who do not meet our bodies' need for protein through our diet can experience symptoms of protein deficiency, which include: weakness, poor muscle tone, fatigue, dry and brittle hair and nails, slow wound healing, weakened immune system, blood sugar imbalances, and even depression.