I stumbled upon this incredibly interesting report on the myths of a low saturated fat (what you find in animal products) diet, and the scarier facts about diets high in polyunsaturated fats (the stuff you are SUPPOSED to eat.)
The moral of the story? Eat more Rettland Farm pork. It's good for you! And the second moral of the story? Don't believe anything that is supposed to be taken as gospel.
Seriously, though. Check it out. It's a little lengthy, but it is truly worth the read.