Really don't get the right-wing strawman responses, this story draws
To you and Tom both: Nobody said that anyone in their right mind (other than a documentarian or a test subject) would eat only McDonalds food. It is a perfectly fair and interesting study, though. Very science-fair-like. Reminiscent of the typical tooth-in-the-Pepsi study.
I would suggest that leaving out the apple pies would probably leave out a significant portion of the fiber of the McDonalds diet. You'd likely be healthier with the fat and sugar than without the fiber.
Sugar causes liver toxosis? I never heard that. Do you have a source for that info?