Your body’s tissues are built and repaired with the aid of protein. It promotes metabolic processes, keeps fluid and pH balance, and strengthens the immune system. It can serve as an energy source and also delivers and stores nutrients.


For healthy health, protein is essential.


The term really derives from the Greek word proteos, which means “main” or “first place.”


Amino acids form lengthy chains when they combine to produce proteins. A protein can be visualized as a string of beads, each of which is an amino acid.


The countless varieties of proteins in your body are formed from 20 distinct amino acids.


The majority of the functions that proteins carry out within cells.


  1. Development and Maintenance


For tissue growth and maintenance, your body requires protein.



Yet, the proteins in your body are constantly being replaced.


Your body normally breaks down the same amount of protein that it uses to create and repair tissues. At times, it degrades more protein than it can produce, increasing your body’s requirements.


This frequently occurs during times of illness, during pregnancy, and while breastfeeding (1Trusted Source, 2Trusted Source, 3Trusted Source).


Moreover, extra protein is needed by older persons, athletes, and those recovering from surgery or an injury (4Trusted Source, 5Trusted Source, 6Trusted Source).


  1. Brings about Biochemical Reactions

Proteins known as enzymes help thousands of metabolic reactions that occur both within and outside of your cells (7Trusted Source).


The way that enzymes are built allows them to interact with chemicals inside of cells called substrates to catalyze reactions that are vital to your metabolism (8Trusted Source).


As an example, digestive enzymes like lactase and sucrase, which aid in the breakdown of sugar, can also work outside the cell.


For a reaction to occur, some enzymes need other molecules, such as vitamins or minerals.


The following bodily processes (9Trusted Source) rely on enzymes:



production of energy

Clotting of blood

contraction of muscles

Disease can result from these enzymes’ absence or dysfunction (10Trusted Source).


(3) serves as a messenger

Hormones are chemical messengers that help your cells, tissues, and organs communicate, and certain proteins are hormones.


They are produced and secreted by endocrine glands or tissues, which are then carried by your blood to their intended tissues or organs where they bind to protein receptors on the cell surface.


Three broad groups of hormones can be distinguished (11Trusted Source):


Protein and peptides are formed of chains of amino acids that might include anywhere from a few to hundreds.

Steroids: They are produced from cholesterol-containing fat. Estrogen and testosterone, the sex hormones, are steroid-based.

Amines: They are created from the individual amino acids tryptophan or tyrosine, which aid in the production of hormones involved in metabolism and sleep.