How do you prevent cirrhosis of the liver from alcohol if you just drink socially?

Don't drink alcohol. The best prevention from alcohol induced liver damage that can lead to cirrhosis is NOT to drink alcohol, even socially. Drinking "socially" to you might mean something different to someone else regarding the amount of alcohol intake per week. In general, if you have been diagnosed with chronic liver disease and fibrosis or scarring of your liver, abstinence from alcohol will be the key.