The other day, SF forwarded me a link "Olive Oil Myth". After reading the article, I was like, oh my god, I got cheated by my colleaque KE for almost 2 years. He once told me that olive oil cannot sustain high heat where the heat will alter the olive oil into unsafe oil.
Jezz, in fact olive oil is a highly monounsaturated oils and therefore resistant to oxidation and hydrogenation. High heat will only cause the olive oil to lose its taste rather than affecting the nutritious value of olive oil.
Have fun reading the link above.