I used to take bc, but when I began having issues with my gallbladder, I was immediately taken off. So, just something to think about - there is some correlation with gallbladder troubles and cystics tend to be at greater risk for that already. Another thing to think about - bc affects calcium absorption (and not in a good way), which can also be problematic for cystics. I know that's not really what you were asking, and I don't have a ton of statistics and junk right at the moment to back up what I just said, but I wanted to mention it so that folks who are considering bc can look into those possible side-effects. Also, you may want to PM Momtana - she has a lot of knowledge on this subject <img src="i/expressions/face-icon-small-smile.gif" border="0">