. . among the papers of a deceased scientist.

The study, 40 years ago, showed conclusively that a diet high in polyunsatuated vegetable fats caused significantly higher deaths from heart disease than a diet high in saturated fats.

Why was it suppressed? Because one of the major participants was Ansel Keys, poster child for cherry picked data. This large, rigorous study went dead against his pre-conceived and unsupported claims that saturated fats caused heart attacks.

An article on the study is published on Dr Mercola's site. Dr. Mercola is a bit nutty about some things (particularly vaccination) but does publish a lot of good material.

40-Year-Old Buried Study Undermines Popular Dietary Advice

. . did mention the the Minnesota study. There are now at least 5 studies that come up with this same result.

The additional fact that Ansel Keys was involved with the study explains a lot about why the data was not published. He was very powerful at the time, and would accept no data that was counter to his thesis that saturated fats caused heart disease.

In his famous "7 Countries" study, which guided all thinking in this country about the subject of fats and heart disease, was invalid. He had a lot of data he did not use because he used only data that supported his thesis. In recent times, other researchers have re-examined the data he had and found that if he had used it all it would not have supported his thesis.

Fortunately, when I started cooking, back in the mid '60s, I rejected the American Heart Association's dictates against butter and saturated fats - for reasons of flavor and tradition. Back then even Natural and Vegetarian cooking books told us not to use Olive Oil because it was higher in saturated fats than corn and soy oils. Today Olive Oil is the only oil that both the Vegetable Oil and Coconut Oil partisans admit is healthy.

I have used almost entirely Olive Oil (virgin, pure and pomace) from that time to the present, and completely rejected margarine in favor of butter. Clearly, I have no reason to regret these choices.

are on my list of oils approved for use where appropriate.

I also use mustard oil for some Indian recipes as the flavor is unique.It should be heated until you see the first wisp of smoke, then get it off the heat immediately to cool a bit. The heating completely removes the acrid taste.

Corn oil, soy oil, vegetable oil (whatever that is this month), canola oil, sunflower oil and all trans fats are on my banned list.