Can Coffee Cause Diarrhea?

Yes, excessive coffee consumption can cause diarrhea in sensitive individuals. Caffeine accelerates digestion and muscle contractions in the intestines, which can lead to loose stools. Additionally, dairy ingredients like condensed milk or evaporated milk found in traditional Singaporean kopi can trigger diarrhea if you have lactose intolerance. Reducing your intake and choosing black coffee can help manage this. Source: SingHealth / Mount Elizabeth Hospital