I am assuming you are referring to the idea that saturated fats are bad for human health as this is still a common myth believed by most of society. Humans have been eating meat for millions of years. Animal meat naturally contains saturated fats. The idea that these fats are bad for our health makes no sense from a evolutionary biology perspective. In addition, new science has emerged that shows there is no evidence that consuming saturated fat contributes to heart disease: http://ajcn.nutrition.org/content/early/2010/01/13/ajcn.2009.27725.abstract
The real causes of clogged arteries and cardiovascular disease is high carbohydrate consumption (sugar), excess omega 6 intake, and trans fats (hydrogenated vegetable oils).