What is the main difference between complete and incomplete proteins?

The main difference between complete and incomplete proteins lies in the composition of amino acids. Complete proteins contain all nine essential amino acids that the body cannot synthesize on its own. These amino acids must be obtained through the diet, making complete proteins crucial for overall health and proper bodily functions, including muscle repair, hormone production, and immune function.

Incomplete proteins, on the other hand, lack one or more of these essential amino acids. They are typically found in plant sources such as grains, legumes, nuts, and seeds. While these proteins can be part of a healthy diet, they may need to be combined with other protein sources to ensure adequate intake of all essential amino acids.

By understanding this distinction, you can better plan your diet to ensure you are getting sufficient protein from varied sources, especially if you are following a vegetarian or vegan lifestyle.