The primary protein foods are meat, fish, eggs and milk or milk products. Proteins are a class of compounds present in every cell of the body, necessary for growth and tissue repair and to provide heat and energy.
Protein foods contain all of the necessary amino acids required for proper nourishment.
You are what you eat (American proverb)
Much of the body's structure is made up of proteins. The typical 160-pound man is composed of about 100 pounds of water, 29 pounds of protein, 25 pounds of fat, 5 pounds of minerals, 1 pound of carbohydrates and less than 1 ounce of vitamins. Since the muscles, heart, brain, lungs etc. are made up largely of proteins which are in constant need of replacement, protein power and the importance of protein foods are obvious.
Are proteins the most essential components
Proteins are the most important components of food and the most essential, but other components are equally necessary for our body. Carbohydrates, fats, minerals and vitamins should be consumed daily and protein foods do not always contain these nutrients.