They are muddling the picture by choosing a McDonald's breakfast. They should have called it a breakfast composed of highly processed food. A truer test would have been a breakfast of high-fat whole food. How do they know it's not all the processed crap in a McDonald's meal that is causing the problem. Seems a little premature to blame it on fat. And what about the carbs, no mention are made of them, as if they were totally neutral.