Myth. It’s true that the caffeine can stimulate the muscles in your digestive system to contract, causing a bowel movement. But because caffeine (epecially escessive caffeine) is dehydrating, it’s not recommended. So if you’re constipated, avoid it or choose decaf.

Is coffee a laxative or constipation?

Coffee can be a diuretic and a laxative for some people. Regular coffee contains caffeine, which is a diuretic. For people who feel the urge to poop after drinking coffee, it acts as a mild laxative as well.

Does coffee make constipation worse?

Drink coffee or caffeinated drinks all day. Caffeine is a stimulant so it can cause you to have a bowel movement. But it can also cause dehydration, which can have the opposite effect and lead to constipation, Fortunato explains.