Drinking black coffee on an empty stomach or drinking too much cold black coffee at one time can cause diarrhea. If you have gastrointestinal diseases, drinking black coffee may also lead to diarrhea.
1. Drinking on an empty stomach: Drinking black coffee on an empty stomach will make the caffeine in black coffee directly stimulate the gastrointestinal tract, accelerating gastrointestinal peristalsis and leading to diarrhea.
2. Drinking too much and too cold at one time: If you drink too much and too cold black coffee at one time, it will stimulate the gastric mucosa and affect the digestive function of the stomach, which will lead to the phenomenon of diarrhea.
3. The existence of gastrointestinal diseases: such as chronic gastritis, chronic enteritis, peptic ulcer, etc., after drinking black coffee, the caffeine will stimulate the secretion of gastric acid, thus inducing the disease of diarrhea symptoms.
If you have diarrhea after drinking black coffee, it is recommended to go to the hospital as soon as possible, with the help of the doctor to identify the cause and give relevant treatment.