This whole thing smells of lies spread by the dairy industry.
Quick: Where does canola oil come from? Don't know? Well the internet has some shocking news for you, buddy:
"Here are just a few facts everyone should know before buying anything containing canola. Canola is not the name of a natural plant but a made-up word, from the words "Canada" and "oil". Canola is a genetically engineered plant developed in Canada from the Rapeseed Plant, which is part of the mustard family of plants. According to AgriAlternatives, The Online Innovation, and Technology Magazine for Farmers, 'By nature, these rapeseed oils, which have long been used to produce oils for industrial purposes, are... toxic to humans and other animals.'
It is an industrial oil. It is not a food. Rape oil, it seems, causes emphysema, respiratory distress, anemia, constipation, irritability, and blindness in animals and humans.
There's more, but to conclude: rape oil was the source of the chemical warfare agent mustard gas, which was banned after blistering the lungs and skins of hundred of thousands of soldiers and civilians during W.W.I."
Whoa! Holy s**t! We love the way the writer crammed in every scary word they could think of: rape, war, cancer, emphysema, respiratory distress, anemia, constipation, irritability, blindness, Canada.
Well to start, congratulations to the canola oil marketing people, who realized at some point that the oil from rapeseed--or Rape Oil--probably needed another name to succeed with housewives. Thus: Canola Oil.