High- fat diets have no correlation with arterial disease. Being overweight definitely does, but dietary fat does not make you fat.
"... the conclusion of a massive new study published in Lancet that followed 135,335 people in 18 countries on five continents. The study found that consumption of fat was associated with a lower risk of mortality, while consumption of carbohydrates was associated with a higher risk. It found that the kind of fat didn't matter when it came to heart disease, and that saturated fat consumption was inversely related to strokes.
The researchers say, ever so politely, that "dietary guidelines should be reconsidered in light of these findings.""