Proteins

Our body needs a constant supply of nutrients to stay alive. Each part of our organism to each tiny cell needs nutrients to survive and to keep vital process going. Through processes of digestion, absorption, and metabolism among others, the body is able to break down the food so nutrients can be used. 

One of such nutrients that we need to stay alive are proteins. Proteins are large molecules composed of smaller molecules called amino acids, which in turn, are composed of basic elements (carbon oxygen, nitrogen). Interestingly enough amino acids from the proteins we consume are broken down and then used to create other proteins that our body uses. These proteins that are created are the main structural elements of our skin, hair, nails, muscles, and connective tissue. 

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 Incredibly, the thousands of proteins that we produce are assembled from only 20 different amino acids.  These amino acids are part of the proteins in the foods that we eat, such as meat and eggs. When we consume food, our body breaks down these proteins into the basic amino acids we need, which can then be delivered to the liver, muscles, brain, and organs that can use them.

The 20 different amino acids we need to create proteins are grouped into two different categories:

1) ESSENTIAL: This group consists of 9 amino acids that our bodies cannot produce by itself. These are histadine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, valine.

2) NONESSENTIAL: This group consists of 11 amino acids that our body can produce in adequate amounts if necessary.

The amino acids in proteins we need can be acquired from a variety of sources, including meat, eggs, dairy products, grains, cereals among others.