|MadSci Network: Agricultural Sciences|
HI Adeline, You have asked and interesting question and you are partially correct in your thinking. The concern with canola oil, which was isolated from earlier varieties, was the content of both erucic acid and glucosainolates (can cause hypothyroidism & thyroid enlargemen). Today canola oil is the seocnd most popular edible oil in world production. New varieties have been breed to contain only small amounts of erucic acid and glucosainolates. I hope this anwers your question. Sincerely, Al Bushway Professor of Food Science
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