Oleic acid is a beneficial natural fatty acid found in large amounts in olive oil (70-80%). The word oleic comes from the latin word oleum or oil. It is a monounsaturated fat that can lower ldl cholesterol(bad) and may increase hdl cholesterol(good). The oleic acid is also thought to be responsible for the blood pressure lowering effects of olive oil.
Oleic acid content is responsible for the reduction in blood pressure induced by olive oil