What is the difference between essential and non-essential amino acids?

Essential amino acids are those that cannot be synthesized by the body and therefore must be obtained through dietary sources. There are nine essential amino acids that play crucial roles in various bodily functions, including protein synthesis, tissue repair, and nutrient absorption. Since the body lacks the ability to produce these amino acids on its own, adequate intake from foods, such as meat, dairy, and certain plant sources, is necessary for maintaining overall health and well-being.

In contrast, non-essential amino acids can be synthesized by the body. While these amino acids are still important for various functions, the body can produce them from other compounds or from the essential amino acids that we consume. Thus, they do not need to be obtained directly through the diet.