tom, I notice in your posts that you are trying to figure out the gender differences which might be affecting IBS. I am curious about one thing and you can ignore this post if you want to but I'll shoot-I know you are a psychologist. Isn't it true that women are more prone to anxiety? Further there is ample evidence on the board to indicate there is a close link between stress and IBS. So aren't just these facts sufficient to account for the fact that men are less prone to IBS than women?