Hey guys, this is my first post on here...Anyway, does anyone know exactly why heating oil too high in frying makes it unhealthy? I have done some research on it and from the many sites I've looked at, all I've gotten is that the fumes can be carcinogenic and that the chemical breakdown of the oils becomes "toxic" to the body. I don't know exactly why they are toxic though, so that's really what I'm asking. Here are the some sites that I got info from: