I’m guessing this topic has come up before but I couldn’t find it with any cursory searches so I am asking it here: why does coffee make you poop? It can’t be simply the caffeine because there are plenty of caffeinated beverages out there, some much more caffeinated that coffee (I’m thinking of you pre-workout energy), that don’t trigger a BM.
My guess is that it’s perhaps a combination of triggers; physical and psychological. The caffeine probably does play a role, stimulating the bowels to move in some way, and the heat of the coffee may aid in this function as well. I am also guessing that the psychological role that coffee plays in a person’s life may also serve as a stimulant of sorts. Because I have found that within taking just two or three sips of my first cup I must go to the bathroom; this doesn’t seem like enough time for anything physical to have occurred in my body from drinking that teensy bit of coffee.
But I leave it to more knowledgeable sources, what is the straight dope here?