What are the common causes of elevated alanine aminotransferase (ALT) levels at 70 U/L?

　　The clinically correct term for "bing zhuan an mei" is alanine aminotransferase (ALT). An ALT level exceeding 70 U/L may result from physiological factors or pathological conditions such as fatty liver disease or viral hepatitis. The specific analysis is as follows:

　　I. Physiological Factors

　　ALT levels above 70 U/L are often caused by chronic sleep deprivation, binge eating, prolonged mental depression, or excessive alcohol consumption prior to testing. Generally, correcting unhealthy lifestyle habits can alleviate these symptoms.

　　II. Pathological Factors

　　1. Fatty Liver Disease

　　Fatty liver can lead to abnormal liver metabolism and hepatocellular injury, resulting in the release of alanine aminotransferase and consequently elevated ALT levels. It is recommended to take medications such as rosuvastatin calcium tablets, simvastatin tablets, or Hugan tablets under medical supervision to reduce fatty liver and protect liver function.

　　2. Viral Hepatitis

　　When the liver is infected by viruses, liver damage commonly occurs, leading to elevated ALT levels during testing. Antiviral therapy with medications such as entecavir tablets or lamivudine tablets is recommended under medical guidance to improve liver function.

　　Additionally, elevated ALT levels could also be caused by other conditions such as hyperthyroidism, liver cirrhosis, or primary liver cancer. If accompanied by other discomforts, prompt medical evaluation and appropriate treatment are necessary.