Alanine aminotransferase (ALT) is an enzyme primarily found in your liver. An enzyme is a protein that helps speed up chemical reactions. ALT is involved in cellular energy production. ALT levels in ...

Alanine aminotransferase (ALT) is a liver enzyme, and high levels can indicate liver damage. Dietary and lifestyle steps to lower ALT levels may help the liver recover. This article looks at what ALT ...