The idea to avoid olive oil is because it's so healthy, but honestly if the vegetable fats thing seems to keep getting backed up via studies then we have to consider the fact that OO on its own may be girl friendly (but of course can still be part of HE Diet too because they're eating lots of animal fats as well)

I will say, though, that I ate butter when I got my daughter. I don't eat margarine and while I did have oils too, I had butter like on potatoes and stuff.