amino acids can be created in the body and are not required in the diet.

This statement is partially correct. Amino acids are indeed created in the body, but not all of them. There are 20 amino acids in total, and the human body can produce 11 of them. These are known as non-essential amino acids. The other 9, known as essential amino acids, cannot be produced by the body and must be obtained through the diet. Therefore, while some amino acids can be created in the body, others are required in the diet.