Olive oil does have some antibiotic properties, so it would give
benefits that plain vegetable oil wouldn't.

I haven't got the research at my fingertips but I've seen claims in the
press that studies show Olive oil does all manner of things - reduces
heart disease? Fights cancer? I dunno. Since I'm Lebanese American, I
use lots of it in our daily diet - mostly for vinaigrettes for veggies
and salads, or in building soups, stews, braised meats, or to drizzle
over chicken and fish when baking.

Leila