"With regard to what Rav Yehuda said in praise of one who prolongs his time in the bathroom, the Gemara asks: Is that a virtue? Wasn’t it taught in a baraita: Ten things bring a person to suffer from hemorrhoids: One who eats the leaves of bulrushes, grape leaves, tendrils of grapevines, the palate and tongue of an animal, as well as any other part of the animal which is not smooth and which has protrusions, the spine of a fish, a salty fish that is not fully cooked, and one who drinks wine dregs, and one who wipes himself with lime and clay, the materials from which earthenware is made, and one who wipes himself with a stone with which another person wiped himself. And some say: One who suspends himself too much in the bathroom as well. This proves that prolonging one’s time in the bathroom is harmful."
Jews and stomach problems have apparently been a theme for a while. (from Berakhot 55a)