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Some Causes Of Diarrhea: Why It Happens?


When you have diarrhea, your bowel movements (or stools) are loose and watery. Its very common and usually not serious.

Many people get diarrhea once or twice each year. It normally lasts 2 to 3 days, and you can treat it with over-the-counter medicines. Some people get it more often as part of irritable bowel syndrome (IBS) or other conditions.


Usually, diarrhea is caused by a virus that infects your gut. Some people call it "intestinal flu" or "stomach flu."

Other causes include:

Alcohol abuse

Allergies to certain foods


Diseases of the intestines (such as Crohn's disease or ulcerative colitis)

Eating foods that upset the digestive system

Infection by bacteria (the cause of most types of food poisoning) or other organisms

Laxative abuse


Overactive thyroid (hyperthyroidism)

Radiation therapy

Running (Some people get runners diarrheafor reasons that arent clear)

Some cancers

Surgery on your digestive system

Trouble absorbing certain nutrients, also called malabsorption

Diarrhea may also follow constipation, especially for people who have irritable bowel syndrome.