As a physician, I think this is incorrect. The fact is that if you go in for a colonoscopy (the large intestine), you take the preparation (horrible tasting liquid) that does make you use the bathroom quite a bit over about a 12 hour period, but folks don't lose 40 pounds. Their colons are cleared out to allow the scope to see the walls/polyps, etc.
Most of these informercials are not substantiated by scientific fact. Just buy the snake oil and be done with it
