Heavy alcohol use can lead to scar tissue (fibrosis) in several organs, most notably the liver, but also other parts of the body where alcohol-related injury and inflammation can trigger abnormal healing.
Liver scarring (cirrhosis)
The best-known alcohol-related scar tissue is in the liver. Chronic heavy drinking can cause long-term inflammation and damage that eventually results in cirrhosis, where scar tissue replaces healthy liver tissue and disrupts normal liver function.[1]
Pancreas scarring (chronic pancreatitis)
Heavy alcohol use is also a common cause of chronic pancreatitis, a condition where the pancreas becomes inflamed over time and can develop fibrosis and scarring. This scarring can impair the pancreas’s ability to produce digestive enzymes and hormones.[2]
Esophagus (alcohol-associated injury)
Long-term heavy alcohol use can contribute to inflammation and irritation of the esophagus, which may lead to scarring in some cases. Scar tissue can contribute to swallowing problems, including narrowing (strictures) after repeated injury.[3]
Stomach and other parts of the upper digestive tract
Alcohol can irritate the stomach lining and worsen inflammation in the upper gastrointestinal tract. Scar tissue is less prominent than in the liver or pancreas, but chronic injury from persistent heavy alcohol use can contribute to chronic changes that may include scarring in affected areas.[3]
Where else scar tissue can occur
Alcohol-related disease processes do not only stay within the digestive system. Some heavy-drinking complications can involve scarring in other tissues as well, but the strongest and most direct link to scar tissue is in the liver and pancreas, with the esophagus being a notable additional site when chronic injury occurs.[1][2][3]
Sources
[1] https://www.niddk.nih.gov/health-information/liver-disease/cirrhosis
[2] https://www.niddk.nih.gov/health-information/digestive-diseases/pancreatitis
[3] https://www.nhs.uk/conditions/oesophagitis/