The alcohol damaged stomach lining can ' t block the alcohol from being absorbed directly into the brain , damaging the brain . The slower emptying of the stomach means the acid stays longer in the stomach . This causes more damage to the stomach ' s capillaries leading to more erosion of the stomach lining . The esophageal sphincter closes the stomach off from the esophagus. When this is damaged, the acid content in the stomach can reflux back up into the esophagus causing lesions , or ulcers there too.
Heavy drinkers have higher rates of esophageal cancers and gastric carcinomas.
Alcohol them moves into the intestines. The Intestines Heavy alcohol consumption causes damage to the structure and function of the small intestines. These villi are full of capillaries necessary to absorb nutrients and release enzymes for digestion. Alcohol damages and flattens these villi . As a result, there is less surface area for absorption of nutrients, inhibition of certain enzymes necessary to transport sugars and proteins into the blood .