Proteins are molecules which are coded for in every organisms DNA. Although every organism has different proteins, the ones they have are crucial for viability and health. As far as the human diet is concerned, protein is essential; it is the key and the major player in maintaining a healthy body. Without a healthy dose of protein, there is no chance of building muscle, maintaining healthy and proper cellular function, and keeping the brain in tip top condition.
Protein is not the number one source of energy for the human body, carbohydrates are. However, protein is essential for maintaining throughout the day. This is because proteins are the molecules that maintain the structural and functional health of many other substances in the body; they catalyze all chemical reactions in the body, and are one of the key players in repairing all types of cellular damage including damage to the DNA. Proteins are the housekeepers of the human body. The proof of this lies in DNA mutations which causes a miscoding of a protein, which leads to many serious and deadly diseases.
Amino acids are what make up proteins. There are certain amino acids that the body makes on its own, and balance its homeostasis. There are some amino acids, however, that the body cannot make by itself. This is where a diet high in proteins comes in. These essential amino acids need to be obtained from other dietary sources. These include dairy products such as eggs and milk and animal products such as cows and chickens. Other good sources of amino acids can be found in plants such as soy beans, pinto beans, legumes, and nuts.
Of course, as with everything else, there is a balance of how much amino acids and proteins a body needs. Too much meat, especially meat high in fat content, can lead to high cholesterol which has many consequences. Healthy people, however, rarely need to worry about protein deficiencies or overdoses. Most people do not need any types of protein supplements unless they are trying to build extra muscle that their bodies would otherwise be unable to build.