If the dinner seems to be going through you, it's not because you have a very efficient digestive system. Instead, says Ganjhu, it's more like if your digestive tract had never grown up. "Pooping right after you eat is a reflex babies have," she says. For some people, this reflex never disappears.
Although it's not ideal, being next to a bathroom after meals is perfectly normal and poses no problem, Schnoll-Sussman says. The stools you eat after dinner do not come from the food you just put in your mouth (even though eating is what triggered the reflex), your body has had plenty of time to absorb the nutrients. The only problem, says Schnoll-Sussman, is that if your shit sinks, floats and smells bad – it probably means that you do not absorb the fats well. In this case, you should make an appointment with a gastroenterologist.