Does Coffee Cause Diarrhea?

Coffee can cause loose stools or an urgent bowel movement in some people because it stimulates colon activity. Both regular and decaf coffee can increase bowel motility, although caffeine can make the effect stronger.

Even decaf can have similar effects, showing that other compounds also play a role. These include acids and hormones that affect digestion. Sensitivity varies. Some people have no issues, while others react after even a small cup. If it keeps happening, cutting back, choosing lower-acid coffee, or drinking it with food may help.

For general information only; not medical advice. Consult a healthcare professional for individual concerns.