Can you find some statistics to support your very, very right argument that separates Type I and Type II Diabetes, because..not the same thing. And gestational appears to the lions share in that last one there, which is yet another thing.
So you are most certainly ASSUMING that most of it is preventable. Nobody saying it's not fucked up Americans are fat, but regulating McDonald's is ridiculous. Restaurants have already routinely backed down to public pressure. Chili's got rid of the Awesome Blossom. You can't Supersize McDonald's. People are still fat. Go figure. Pouring money into regulating something like this is just as stupid, yo.