Did you read the link from Dr Grace Liu's site about the proven effects of raw potato starch and how it decimates the good bacteria in the gut? Anyone with diabetes should be very concerned about anything that can cause fatty liver - most of us have that already and want to reverse it, not worsen it.
I have nothing against Dr Hyman - I've been following his work for several years now. His new work setting up the functional medicine clinic at the Cleveland Clinic is outstanding. Please don't imply negativity towards the man and his work when I'm only disagreeing with one part of his message.