Obviously we are all difference. However, one way to tell if weight loss will help is if bending over to pick up something, tie shoes, etc, causes a squirt, or however much.
Newbie2this: sorry, but maybe most Americans who are 50 pounds overweight might not have UII/OAB, but might be 20% or better. We may be the fattest nation on earth. It probably depends on factors that Doctors can't tell us about because they don't know, but physiologically, it makes sense, if you study our anatomy. Lost about 40 pounds, have 40+ to go, and things have improved. But how do i tell why? I've also gotten better at anticipating and clamping down. My brain has had time to heal. Is it that? Paying more attention to diet? A combination?
I don't see how they could do a double-blind study, but they could take really big numbers of people and compare for statistics, if nothing else. The next problem is getting enough people who admit it and are willing to join the study - and finding who and why others wouldn't.