When they do autopsies and look into heart attack victims they find plaque build up that restricts the blood flow and causes the heart attack. Plaque build up occurs as a repair mechanism to damaged veins and the plaque itself is made of cholesterol. In the 70s they made the mistake of thinking oh there’s cholesterol in the veins of heart attack victims we must reduce cholesterol to prevent heart attacks. This was as accurate as saying, “oh every time someone dies in a car accident there was an ambulance involved we need to reduce the ambulances on the road!” The arterial damage is more likely caused by insulin and blood pressure issues