Some things to consider. Since the low fat hypothesis came out in the US, fat consumption actually went up. But refined carb consumption went up even more and the population is less active than ever inspite of what one poster above says. 35 years ago you had to get up to change channels, you would walk to the corner store - now we drive everywhere. We hire maids to clean the house and peopel to walk our dogs. We are more likely to work at a desk job. There wasn't a fast food restaurant on every corner - people actually ate most of their meals at home - most people had gardens etc etc.
Whether Taubes is right or wrong, i found his book very poorly researched and very lopsided. he had a real agenda to push so he ignored research that proved him wrong and made some really bizarre statements (none that I can recall off hand) I remember being very disappointed.