Leaky bowel syndrome is when substances from the stomach or small intestine leak into the bloodstream. It is categorized by symptoms like bloating, gas, cramps, pain and food sensitivities, according to WebMD.
Leaky bowel syndrome is not a medical diagnosis; it is a name used to describe intestinal leakage, as WebMD explains. People with intestinal leakage often experience intestinal permeability or hyperpermeablity. There are small passages in the small intestine, and if they are not working properly, they can cause leakage. Some common causes of leaky bowel syndrome include celiac disease, Crohn's disease, certain drugs, radiation therapy and food allergies.