What is the difference between essential, nonessential, and conditionally essential amino acids?

Answer 1

Amino acids can be categorized as essential, nonessential, or conditionally essential depending on whether we need to consume them from the foods we eat. The 9 essential amino acids are those you must consume in your diet because your body cannot make them or cannot make them in required amounts. The remaining 11 amino acids are nutritionally nonessential because your body can make them from other compounds such as the essential amino acids or glucose. However, if conditions exist that prevent the body from synthesizing a nonessential amino acid in the required amounts, that amino acid becomes conditionally essential and must be obtained from the diet.