Liver cirrhosis
Don't drink alcohol heavily. If you find that your drinking is getting out of hand, seek professional help.
Avoid intravenous drug use (or only use clean needles and never share other equipment) to reduce the risk of hepatitis B and C.
Some research indicates that hepatitis C may be spread via shared use of straws or items used to snort cocaine or other drugs. Avoid snorting drugs or sharing any related paraphernalia. If you have a problem with illicit drugs, seek help.
Carithers RL, McClain C. Alcoholic Liver Disease. In: Feldman M, Friedman LS, Brandt LJ. Feldman: Sleisenger & Fordtran's Gastrointestinal and Liver Disease. 8th ed. Philadelphia, Pa: Saunders Elsevier; 2006:chap 81.