Sometimes, people have poop that's so dark it looks black. It might also have a sticky consistency, like that of tar. If your poop is black, it might be due to a change in your diet, a new medicine ...

Pooping can have physiological and psychological effects that may feel pleasurable. Passing a bowel movement involves tension in certain muscles. Relaxing the muscles after a motion stimulates the ...

Holding in poop on occasion is not harmful, but doing this often can lead to constipation, impaction, inflammation, and more severe complications. People who hold in their poop too often may start to ...

Qin Rao, MD, is a board-certified physician based in New York City. He currently works as a gastroenterologist and hepatologist at Manhattan Gastroenterology. Grey poop can be caused by liver issues ...