Alanine aminotransferase (ALT) is an enzyme primarily found in your liver. An enzyme is a protein that helps speed up ...

Liver enzymes are proteins in your liver that speed up chemical reactions. If your liver is damaged, blood tests will show abnormally high levels of these enzymes circulating in your bloodstream.

Your liver is working overtime right now, processing everything from your morning coffee to last night’s dinner, but it might be sending you desperate distress signals that you’re completely missing.