We already know that McDonalds is bad for the health. Why are scientists testing mice instead of making sure that information is printed on some of the ton of waste (plastic cups, paperwrappers etc) that McDonalds spews out daily. Wouldn't that be a tad more useful and a hell of a lot more humane than torturing mice?
The decisions we make, the coldness and stupidity of so many of them, are whats responsible for this worlds health. Wake up people this world is dying as you read this. If every form of pollution was stopped today the world would still die. It has to be minimized to the max and the soil, air and oceans have to be brought back. Do you know the United States Navy ( a gross gross polluter with no respect for the ocean in any way) has invented artifical air for when this planet has no air from the plant life dying? What a solution, and oh by the way it deforms you eventually and you become dwarfed. As Aldous Huxley said you've paid the piper and you'll dance to those tunes.