Chronic alcohol abuse increases the risk of cancer of the upper respiratory and digestive tracts (mouth, upper pharynx, larynx).

It also favours the occurrence of gastro-oesophageal reflux and increases the risk of cancer of the oesophagus.

Alcohol is the main cause of inflammation in the stomach (acute erosive gastritis).

Alcohol causes poor absorption of nutrients in the intestine, leading to nutritional deficiencies, such as vitamin A and C. Large quantities of alcohol can cause haemorrhagic lesions in the internal wall of the intestine.