What are essential amino acids?

Essential amino acids are those that cannot be synthesized by the body and must instead be obtained through dietary sources. The human body is capable of producing certain amino acids, known as non-essential amino acids, but essential amino acids must be ingested because they play critical roles in various physiological processes, including protein synthesis, neurotransmitter production, and hormonal regulation.

Dietary sources rich in essential amino acids include meat, fish, dairy products, eggs, and certain plant-based sources like quinoa and soy. Understanding the importance of these amino acids is essential for anyone studying nutrition, as a deficiency in them can lead to a range of health issues, including impaired muscle repair, weakened immune function, and stunted growth.