I've heard, like after my husband got a colonoscopy, that the garbage build up just isn't there, but i don't believe it. I also knew an orthopedic surgeon who didn't believe chiropractors could move bones in the back cause he didn't see how they could from having seen inside our anatomy doing surgery. (Said the ligaments, etc. were too strong). Hogwash! I went to church with him and debated it with him, perhaps not with any other intelligence other than that HE never helped me! I see an orthogonal chiropractor, now, and my 14 degree "scoliosis" is now down to a slight curvature between my shoulder blades and my legs are the same length - and my pelvic obliquity is gone which I had for over 20 years! Back to the point, I only get a flat tummy after a cleanse or when I'm quite...cleaned out. (Lovely subject "matter" : )