do this experiment.

get a oil burning lamp, put your canola oil in it, see if it burns. it won't because refined canola oil has a burning point of over 600 degrees.

UNREFINED canola oil burns at 225 degrees. in other words it OXiDiZES at 225 degrees. the same oxidation reaction occurs in your body. in fact, cancer is caused by improper oxidation of FATS within the cells. not only cancer but a lot of diseases.if the cell membranes which are made of fat are non reactive that screws up the whole membrane

they increase the burning/smoking of the oils so they can use them in deep fried shit at fast food restaurants. I am eating this shit as we speak because i don't have a whole lot of options.