The body is capable of making only certain amino acids, called non-essential amino acids, because it has the necessary enzymes and biochemical pathways to synthesize them. However, it cannot produce essential amino acids on its own due to the complexity of the biochemical pathways and missing enzymes or precursors needed for their synthesis. Therefore, essential amino acids must be obtained from external sources, primarily through diet. Foods, especially animal proteins like meat, eggs, and dairy, as well as some plant-based sources such as soy and quinoa, provide the full spectrum of essential amino acids needed for the body's protein synthesis and other vital functions.
In summary:
- Essential amino acids cannot be synthesized by the body.
- They must be consumed in the diet from complete protein sources.
- Common dietary sources include animal products and certain plant-based foods.
- A balanced diet ensures an adequate supply of all essential amino acids.
