What are the primary sources of complete proteins?

Complete proteins are those that contain all nine essential amino acids that the body cannot synthesize on its own. Animal-based foods are generally recognized as primary sources of complete proteins. Meat and animal products provide a balanced profile of these essential amino acids, making them a valuable component of a nutritious diet.

In contrast, while nuts, seeds, legumes, and beans offer various health benefits and protein content, they are often considered incomplete proteins because they lack one or more of the essential amino acids. Fruits and vegetables, while rich in vitamins, minerals, and antioxidants, typically contain very little protein overall, and therefore, do not serve as primary sources of complete proteins. This distinction highlights the importance of including meat and animal products in dietary plans for those seeking to ensure adequate intake of complete proteins.