Comment · Fri, March 15, 2013 · Ceretropic
This Man Thinks He Never Has to Eat Again (Vice UK)
What they were answering
herman_gill · 2 points
Yes it absolutely does. Fats with multiply double bonds oxidize, breakdown, or are otherwise messed up when exposed to heat/air long enough and can degrade into trans fat. Polyunsaturated fats are particularly sensitive, which includes Omega 3.
That's why you're not supposed to cook with EVOO.
The amount is mostly harmless unless you're charring it for hours, but fatty fish in particular is more prone to this than pretty much any other whole food when cooked.
u/MisterYouAreSoDumb · Ceretropic
What about using grapeseed oil for cooking? That has high amount of polyunsaturated fats, but also a high smoke point.