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The branched chain amino acids (BCAAs) L-valine, L-leucine, and L-isoleucine enhance protein synthesis in liver cells and muscle cells.
Because they can be oxidized in the cell’s mitochondria, the branched chain amino acids may also provide energy and may serve as fuel sources for skeletal muscles during periods of metabolic stress. As a result, BCAAs have been used with success to support liver function.
A study in 2008 also showed BCAAs supplementation improved insulin resistance and beta cell function as well as energy metabolism and glucose tolerance in certain people. They are also used by athletes.
A current mouse study showed how restoring hippocampal BCAA concentrations to normal had the effect of reinstating normal brain function, by helping the synapses to function efficiently.
BCAAs are made up of three essential amino, leucine, isoleucine, and valine. They are essential because the body is unable to make them out of other amino acids, meaning they must be ingested through food or supplements.
The BCAAs make up 40 percent of the daily requirement of all nine essential amino acids, indicating their importance.
The BCAAs are found in foods containing protein, with the highest concentrations in chicken, beef, salmon, eggs, and whey protein. They can also be supplemented, which can be useful for athletes because free form BCAAs bypass the liver and gut tissue and go directly to the blood stream.
BCAAs have a branched side chain that simplifies the job of converting each amino acid into energy during intense exertion. They make up about 35 percent of all muscle tissue.
The more BCAAs that are present in the muscles, the more they will be used for energy, slowing the breakdown of muscles cells and preventing muscle loss.
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