Chronic Alcohol Use
Chronic alcohol intake causes a violation of the intestinal microflora. Due to the negative effect of alcohol, the permeability of the intestinal walls increases, the state of the microflora deteriorates, the necessary microorganisms cease to be produced, and useful substances are poorly absorbed. Disorders in the intestines cause diarrhea, a general deterioration in digestion.
Alcohol causes cute poisoning (intoxication) of the body. Ethanol, which is part of alcohol, has a strong toxic effect and causes various disturbances in the digestive process. After drinking alcohol [4], the body activates the maximum resources to quickly remove the toxic substances formed during alcohol breakdown. Vomiting, diarrhea allow you to cleanse the stomach and intestines of toxins quickly, but they are dangerous due to dehydration.
References:
[1] https://www.mayoclinic.org/diseases-conditions/diarrhea/symptoms-causes/syc-20352241
[2] https://www.niddk.nih.gov/health-information/digestive-diseases/diarrhea/symptoms-causes
[3] https://www.ucsfhealth.org/conditions/diarrhea/symptoms
[4] https://www.healthline.com/health/diarrhea-after-drinking-alcohol#:~:text=Scientists%20have%20found%20that%20drinking,your%20digestive%20tract%2C%20worsening%20diarrhea.