Not all olive oils are created equally, and they certainly are not nutritionally equal. In fact, common olive oils found in the grocery store are not pure olive oil, but a mix with other vegetable oils, like sunflower.Studies have proven time and time again that the health benefits from olive oil come from its high phenolic content and antioxidant properties, and its high proportion of monounsaturated fats. However, not all olive oils have the same high content of these beneficial compounds. ...