Somehow the last part of the information you posted got cut off ,
@Marie Mallory . I went to the link you posted and it says that olive oil is the very safest one to use, and coconut oil (which is what I mostly use if we fry anything with oil) is the next best. Andrew Weil is a great source to use, and the one that Martin Alonzo always recommended in his posts here.
Here is the part that got cut off:
“The investigators tested the heat stability of 10 of the most commonly used cooking oils in Australia:
extra-virgin olive oil, virgin olive oil, refined olive oil, canola, grapeseed, coconut, avocado, peanut, rice bran and sunflower oils. Results showed that extra-virgin olive oil was the safest and most stable when heated to temperatures even higher than those commonly used for sautéing, deep-frying and baking. It produced the lowest quantity of polar compounds compared to the other oils tested. The runner up was coconut oil.”
I use olive oil if I am sautéing, which is a lower heat, and we seldom fry anything except hamburger, which has its own grease. The tallow from beef fat is considered the very best thing for hot frying, and a lot of the restaurants are now going back to using tallow for making foods like French fries, which are cooked in deep fat and high heat.
We avoid all of the seed oils now, and just use either the olive oil, coconut oil, or an animal fat like tallow, lard, or butter, which are all supposed to be much healthier than any of the seed oils that have to be processed with high heat and chemicals and bleach to be usable.