Why Does Salad Go Right Through Me? This seems normal because lettuce is high in fiber. You may also have heartburn syndrome if it is caused by overeating. In IBS, fiber-rich foods pass through the digestive tract very quickly.
My mother also had this problem. Her doctor told her that some people only have problems with lettuce. It’s like lactose intolerance, some people can’t touch dairy products because they are not well absorbed. Check WebMD for resources for this situation.