Why do we Need Protein?

If there is one nutrient that could be called a true building block for growth and health, protein would be that nutrient. In fact, protein is one of three items known in the medical profession as macronutrients. The human body is about 20 percent protein. The other two macronutrients are carbohydrates and fats.

This nutrient is crucial to the maintenance of all tissue in our bodies but it also plays an important role in keeping our immune system up to par. Our skin, hair, toe nails and finger nails are all very dependent on the presence of sufficient protein. Protein is also essential for the production of enzymes in the body. (Enzymes are bio-molecules that increase the rate of chemical reactions in the body. According to medical texts and encyclopedia entries, almost all the know enzymes in the human body are proteins.

We need these complex molecules to survive. They are composed of a specific substance called amino acids that gather and bind in particular ways to form the various proteins we have to have. One description of proteins indicates a kind of circle of life. According to this description, we need proteins that supply amino acids that help the body use its proteins. Proteins are also capable “partners” in the body, as they work closely with several minerals and vitamins.

According to Wikipedia, “Proteins are the chief actors within the cell.” Some cells are half protein, by weight. In fact, proteins may be the most crucial nutrient in our bodies because they are able to “bind other molecules specifically and tightly.”

Proteins have amazing capabilities in addition to this binding task. Many of the interactions between proteins can reverse, depending on various types being present in the body. This amazing ability allows proteins to “carry out discrete sets of function.” Scientists have recently focused on the interactions between proteins to learn more about cell function in the body. This has helped them determine differences in types of cells.

Since proteins are not only important but also essential it would seem that we would make an extra effort to get enough protein in our diets. However, this isn’t always the case. Unless we eat fresh fish and dairy products, along with whole grain bread, eggs and vegetables on a regular basis we may find ourselves with a protein deficiency. Certain beans and nuts are also great sources of protein.

People should get as much as one-third of their calories from high-protein foods. The majority of people do get enough protein in their diets but some people don’t. In these latter cases, there is a danger of improper growth (children, pregnant women); inability of the body tissues to repair themselves when injured or damaged by disease; developing and maintaining muscle shape and strength.

When we give our body the right amount and right type of protein it is able to separate proteins into the individual amino acids. This prepares these crucial substances to do their specific tasks. It is well known that animal protein provides the necessary amino acids. Plant protein is not always the best source for essential amino acids.