In patients without hepatitis B, frequent late nights may not be directly related to cirrhosis, but can cause liver damage. Cirrhosis is a progressive, chronic liver disease caused by one or more causes and characterized by diffuse fibrosis, pseudofollicles, and regenerative nodules. Causes of cirrhosis include viral hepatitis, chronic alcoholic liver disease, non-alcoholic fatty liver disease, long-term cholestasis, schistosomiasis and cryptogenic cirrhosis, etc. Hepatitis B is a kind of viral hepatitis, and if there is no Hepatitis B or other underlying liver disease, staying up late for a long period of time without getting a good rest may also lead to liver function damage, but it usually does not develop into cirrhosis. Staying up late hurts the liver, and it is recommended that you develop good living habits, go to bed early, avoid staying up late, drinking alcohol, overwork, eat a balanced diet, and exercise appropriately in order to enhance your physical fitness.