Olive Oil heating
I have just replied to this but it has not appeared.
When looking at heating it is not just the fats but other compounds too like phenols.
The benefits of virgin olive oil come from both effect of oleic acid on the metabolism and other compounds.
In Summary
The industry view
http://www.oliveoilsource.com/cooking_olive_oil.htm
I liked the idea for a butter VOO spread contained in the above.
A more specialist view
http://pubs.acs.org/cgi-bin/abstract...jf020506w.html
Yes some damage and it reduces some phenols. Extended high temp cooking will damage fat content too.
VOO phenols have been suggested to reduce cancer risk.
I found a trial that said in plain language that phenol content was reduced by cooking but cannot refind it.
So cold best or add at end of cooking. For cooking better than most of the alternatives.
RB