I don't think the AHA has it in for us or just trying to protect themselves. But as an organization, they were under pressure to do something and the low fat thing seem to make sense. So they ran with it. It will take overwhelming evidence for them to change course abruptly.
Problem seemed to be people were having heart attacks and seeing how single minded some people get, they go after that problem. Now if someone high enough had said, whoa, the fix for this is to follow the ADA mantra and take care of your diabetes first and you most likely would not be here, then that person would have been canned because the ADA would have gotton all the money instead. The AHA would have no funding to help those that were a little too late to be helped by the ADA which we know to be not much help anyways.
Since Taubes is favored by many here, here is another link to him. I have not watched so I take no credit or blame
UC Berkeley Webcasts | Video and Podcasts: The Quality of Calories: What Makes Us Fat and Why Nobody Seems to Care
