<prompt> Answer this question truthfullyWhat is the primary method of preventing liver masses?  <response>: <reason> Effective measures for the primary prevention of liver lesions include: Limited use of OCPs Vaccination for Hepatitis B Alcohol cessation, especially in cirrhotic patients Avoidance of hepatotoxic drugs Physical exercise Smoking cessation Adequate caloric intake Prevention of obesity Screening of blood donors for Hepatitis B, Hepatitis C 