What are Essential Amino Acids (EAA)?

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Essential amino acids (EAAs) are amino acids that cannot be synthesized by the human body and therefore must be obtained from the diet. There are nine essential amino acids:

  1. Histidine: Important for growth and tissue repair, as well as the production of histamine, a neurotransmitter involved in immune response, digestion, and sleep regulation.
  2. Isoleucine: Plays a role in muscle metabolism and is heavily concentrated in muscle tissue. It is also important for immune function, hemoglobin production, and energy regulation.
  3. Leucine: Critical for protein synthesis and muscle repair. It also helps regulate blood sugar levels and stimulates wound healing.
  4. Lysine: Vital for protein synthesis, hormone and enzyme production, and the absorption of calcium. It also plays a role in immune function.
  5. Methionine: Important for metabolism and detoxification. It also helps in the absorption of zinc and selenium and is necessary for tissue growth and repair.
  6. Phenylalanine: Precursor for the neurotransmitters tyrosine, dopamine, epinephrine, and norepinephrine. It plays a role in the structure and function of proteins and enzymes.
  7. Threonine: Important for collagen and elastin production. It also plays a role in fat metabolism and immune function.
  8. Tryptophan: Precursor for serotonin, which regulates mood, sleep, and appetite. It is also needed for the production of niacin (vitamin B3).
  9. Valine: Important for muscle growth and tissue repair. It also plays a role in energy provision and the regulation of the immune system.

These amino acids must be consumed through protein-rich foods such as meat, fish, dairy, eggs, soy products, and some plant-based sources like quinoa and buckwheat. Adequate intake of these essential amino acids is crucial for maintaining overall health and bodily functions.

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