What Causes Diarrhea and Weight Gain?

You may lose weight when you have diarrhea as a result of lost fluid. But you can also experience unintentional and rapid weight gain with loose and watery stool.

Causes of weight gain and diarrhea can overlap, including some medical conditions that a doctor should manage.

Causes of Weight Gain and Loose Stools

If you’re looking for a cause of having diarrhea and weight gain, examine your diet first.

Eating excessive amounts of sugary and sweetened foods raises your chances of gastrointestinal distress by 49 percent, according to research. It can also cause weight gain, as can changes in your diet, Cleveland Clinic says.