Why does drinking coffee cause diarrhea?

Coffee is a common beverage that many people like. In recent years, many white-collar workers like to drink a cup of coffee to refresh themselves, which can improve their work efficiency. However, some people are different. They are prone to diarrhea after drinking coffee. There are many reasons for this phenomenon, such as weak stomach, drinking coffee on an empty stomach, etc., which may cause this phenomenon.

Why does drinking coffee cause diarrhea?

1. Drink coffee on an empty stomach

Caffeine stimulates the secretion of gastric acid. If you drink it on an empty stomach, it will irritate the stomach, easily damage the stomach, and affect the digestion and absorption of gastrointestinal function. Especially if you do this for a long time or have a bad stomach, it may induce gastric ulcers, causing stomach pain and diarrhea. Especially in the morning, drinking coffee on an empty stomach is most likely to cause diarrhea and stomach pain.

Coffee can promote gastrointestinal motility and accelerate gastrointestinal digestion. For most people, coffee has the effect of stimulating bowel movements. Therefore, if you drink too much coffee, it will over-stimulate your stomach and intestines, which will increase the urge to defecate and may cause diarrhea.

3. Poor stomach

Coffee can stimulate the secretion of gastric acid. If you have a bad stomach, chronic enteritis, gastroenteritis or other gastrointestinal diseases, drinking coffee will stimulate the gastric mucosa and promote the secretion of gastric acid, which may induce gastrointestinal diseases and cause diarrhea.

4. Drinking expired and spoiled coffee

Another reason for diarrhea after drinking coffee may be that you drank expired and spoiled coffee, or the coffee was not stored well and has been contaminated in advance. Because coffee is slightly bitter, it is not easy to be discovered. Spoiled coffee will breed a large number of pathogens and molds, which will irritate the stomach and intestines and cause diarrhea after the human body drinks it.

5. Allergic to coffee

If you get diarrhea as soon as you drink coffee, it is likely that you are having an allergic reaction to coffee, which is medically known as "enterogenic allergy." Theoretically, the human body may have an allergic reaction to any substance, and allergies are not just itchy skin. Some people do not have skin damage, but experience symptoms such as abdominal pain and diarrhea. Just avoid allergens and don't drink coffee and you'll be fine.