This delicious oil is full of free-radical fighting antioxidants, anti-aging polyphenols, and monounsaturated fats to help lower bad cholesterol. The great thing about olive oil is how versatile it is. It's a delicious cooking oil, salad dressing, and butter substitute in baking recipes too. Research has shown Mediterranean regions in which the cuisine contains a lot of olive oil also boast lower rates of heart disease and cancer.