i love coffee!!! hence my screen name....
i dont think coffee causes a flare, but i think it can stimulate the colon and bring down whatever is up there quickly....
not flaring i drink coffee with no problems
when flaring i switch to green tea
now i am in the tail end of a flare, very mild symptoms and i have experimented with or without coffee and it seems to make no difference so i drink one cup a day
i did notice that if i eat my breakfast first, then have coffee, it has much less of a stimulating effect on my colon.
i think each one of us is different and you may have to expereiment with what works for you.
i feel like i have to give up so much for this disease, but i really love my coffee , and i would rather give up something else