Olive Oil was considered to be a sacred food in Ancient Greece. Used to anoint kings and athletes, to be burned in lamps and temples, and even the eternal flame of the first Olympic Games. With its extreme health powers they learned of, it isn't surprising that it was so revered.
Greeks rubbed the oil all over their body and used it often in their cooking, largely at the instruction of physician Hippocrates, who is referred to as the father of medicine, who called it "the great therapeutic."
Olive oil also possesses anti-inflammatory agents, which can alleviate or stop symptoms of diseases like rheumatoid arthritis.
Plus, using it in cooking as opposed to butter or other oils can be a much healthier and nutritious alternative for your meal.