If bile acids are not significantly elevated, there are usually no obvious symptoms. If bile acid is elevated significantly, it can often indicate some related diseases, such as hepatobiliary system diseases, gastrointestinal system diseases, and diseases that cause changes in bile acid metabolism. Therefore, the most common cause of elevated bile acids is acute hepatitis. In acute hepatitis, serum bile acid concentration can increase sharply; in chronic hepatitis, the increase may not be too sharp, but it is also often suggested to increase; in patients with cirrhosis, the storage capacity of bile acid is significantly reduced, which can cause an increase in serum bile acid concentration; alcoholic liver disease can also cause an increase in bile acid; biliary stasis can also cause an increase in bile acid; women during pregnancy can also cause an increase in bile acid. Bile acids can also be elevated in women during pregnancy. Elevated bile acids can be used as a reference for diagnosing disease. If the bile acid is not too obviously elevated, there is often no obvious symptom. If the bile acid is very closely elevated, biliary stasis may cause jaundice and may cause itchy skin.