Yes, stopping drinking can cause diarrhea in some people. This is because alcohol can irritate the lining of the stomach and intestines, and chronic alcohol use can lead to changes in the way the gastrointestinal system functions. When a person stops drinking, their body may have to readjust to these changes, which can result in gastrointestinal symptoms such as diarrhea. It’s important to note that alcohol withdrawal can be dangerous and even life-threatening in some cases, so if you are experiencing symptoms after stopping drinking, it’s important to seek medical attention.