Q: Can drinking wine cause diarrhea?—Dale, Sacramento, Calif.
A: Moderate wine consumption has been linked to many potential gastrointestinal health benefits—and in some cases, a tipple may even help settle the stomach after a big meal. But drinking alcohol, particularly in excess, can also cause or exacerbate certain stomach problems, including constipation. What about diarrhea?
Why Does Drinking Alcohol Upset My Stomach?
First things first: Dr. Rami El Abiad and Dr. Mohamad Mokadem, gastroenterologists at the University of Iowa Hospitals and Clinics, told Wine Spectator that “most social drinkers who consume alcohol in moderation will almost never experience any digestive issues,” including diarrhea.
Moderation is a key word here. “Consuming alcohol in excess, wine included, can adversely affect the digestive system.” They note that tannins, which are found in significant amounts in many red wines, can have “a mild laxative effect.” People who are sensitive to tannins “may experience loose stools or even diarrhea.”
How Does Alcohol Affect the Intestines?
Dr. Carol Murakami, a spokesperson for the American Gastroenterological Association, adds that “alcohol tends to slow the muscle function in the small intestine necessary for proper digestion and absorption of nutrients.” This effect can shorten the time it takes for food to pass through the intestine and cause “food to move through the intestine before digestion and absorption are completed.” In addition, “alcohol can impair digestive enzyme function and impair absorption of water, electrolytes, carbohydrates, proteins and fats.” All of this can result in stomach discomfort and diarrhea.
Dr. El Abiad and Dr. Mokadem stress that “individual tolerance and sensitivity to alcohol and wine can vary.” They counsel that “if you experience persistent digestive symptoms after consuming wine in moderation, it is advisable to consult a healthcare professional for further evaluation.”
As always, talk to your healthcare provider about incorporating wine into a healthy lifestyle.—Kenny Martin
