Verywell Health on MSN: Why you may experience diarrhea after drinking alcohol Medically reviewed by Jay N. Yepuri, MD Key Takeaways Alcohol can irritate the intestines and cause diarrhea.The type and amount of alcohol you drink can increase your risk of diarrhea.People with ... Good Housekeeping on MSN: What really happens to your body a week after you stop drinking What really happens to your body a week after you stop drinking