Unfortunately Tim's book is so far out there as far as some of his weight loss methods are concerned. NBC did a segment about the ice bath in particular and what an epic fail. The doctor they had in their segment called it dangerous to say the least and from a common sense point of view, I agree with the doctor.
This can't be too good for Tim's book that's for sure.
The BIG lesson for product creators... Make sure everything you claim can be backed up with REAL proof. Not just you enduring pain in an ice bath just to sell a bunch of books. When you have indisputable proof the media won't OWN you and you're book won't be at risk.