What does it mean if the AST/ALT ratio is 0.8, which is偏低 (low)?

Generally, a low AST/ALT ratio of 0.8 may be caused by imbalanced diet, post-exercise stress response, mild fatty liver, viral hepatitis, cirrhosis, and other conditions. It is recommended to seek medical attention promptly, identify the underlying cause, and receive symptomatic treatment under a doctor's guidance. Specific analyses are as follows:

1. Imbalanced diet: Long-term picky eating leading to insufficient protein intake can affect liver enzyme synthesis, resulting in a decreased AST/ALT ratio. Daily dietary adjustments should include increased intake of high-quality proteins such as eggs, milk, and lean meat, along with maintaining dietary diversity. No specific treatment is required.

2. Post-exercise stress response: After intense physical activity, minor muscle cell damage may lead to a slight elevation in ALT levels, thereby lowering the AST/ALT ratio. Adequate rest is needed after exercise, avoiding strenuous activities in the short term. Proper hydration and electrolyte supplementation can aid recovery.

3. Mild fatty liver: Accumulation of fat within hepatocytes can impair normal liver function, potentially causing abnormal AST/ALT ratios. Management includes controlling high-fat and high-sugar diets, engaging in regular aerobic exercises such as jogging or swimming, and, if necessary, taking medications like silybin capsules, polyene phosphatidylcholine capsules, or reduced glutathione tablets as directed by a physician.

4. Viral hepatitis: Liver infections such as hepatitis B or C trigger inflammatory responses that alter liver enzyme levels. Patients should ensure adequate rest and avoid fatigue, and follow medical advice for antiviral medications such as entecavir tablets, tenofovir disoproxil fumarate tablets, or lamivudine tablets to suppress viral replication.

5. Cirrhosis: Chronic liver damage leads to fibrosis and declining liver function, which may result in a reduced AST/ALT ratio. Strict abstinence from alcohol is essential, along with limiting salt and fluid intake. Procedures such as portosystemic shunt surgery may be performed to reduce portal pressure, and medications including spironolactone tablets, furosemide tablets, or Fuzheng Huayu capsules may be used as prescribed.

Routine lifestyle adjustments include maintaining regular sleep patterns, avoiding late nights and excessive fatigue, and reducing metabolic burden on the liver. Regular liver function tests are recommended to monitor changes in laboratory values and overall health status.