This video (which is almost 02 hours long) discusses the proliferation of vegatable oils in the current American diet and the disasterous results that its introduction has had on our health. I think one of the most interesting points that was introduced that the incidence of Myocardial Infarction (commonly known as a Heart Attack) was practically non-existent prior to the late 1920's. It has since become one of the leading causes of death in the United States and has been linked back to (primarily) diet. Another interesting point was the link between the American Heart Association and their failed attempt to promote a diet that killed almost a third of the subjects from heart attacks!
Watch this video... it is worth the time spent doing it - it may just save your life!