Diarrhea is a common condition that causes frequent, loose, watery stools. It is usually caused by an infection in the digestive tract, but there are several other possible causes.
Infections
Bacterial infections are the most common cause of diarrhea. These infections can be spread through contaminated food or water, close contact with an infected person, or contact with animals or their waste products. Viral infections are another common cause of diarrhea. Rotavirus is the most common cause of viral diarrhea in children, while norovirus is the most common cause in adults.
Food Intolerance
Food intolerance or sensitivity is another possible cause of diarrhea. Lactose intolerance is the most common food intolerance, and it is caused by an inability to digest lactose, a sugar found in dairy products. Other food intolerances can cause diarrhea, including reactions to artificial sweeteners, gluten, and certain types of fruit and vegetables.
Medications
Certain medications can also cause diarrhea. Antibiotics are the most common medications that can cause diarrhea. They disrupt the balance of bacteria in the digestive tract, leading to diarrhea. Other medications that can cause diarrhea include antidepressants, antacids, and chemotherapy drugs.
Other Causes
Diarrhea can also be caused by medical conditions, such as Crohn's disease, ulcerative colitis, and celiac disease. Stress and anxiety can also cause diarrhea, as can changes in diet, such as eating too much fiber or drinking too much caffeine.