Alanine is a non-essential amino acid, meaning the body can produce it on its own. It plays a crucial role in protein synthesis and is involved in the metabolism of glucose. Alanine is found in various foods, particularly in meat, fish, eggs, and dairy products. In addition to its role in building proteins, alanine helps in the regulation of blood sugar levels and supports the immune system. It is also important for the production of pyruvate, which is a key component in energy production during exercise.