13. Olive oil
Olive oil is a much healthier option than butter. It contains a lot of important substances that help to prevent and fight age-related diseases. Olive oil is high in monounsaturated fats, so it lowers the level of bad cholesterol and rises good, HDL cholesterol.
Consuming olive oil helps to avoid heart diseases and stroke, it can also reduce the risk of some cancers. Olive oil can be used to prepare salad dressing or sauces, you can also use it as a dip for bread or just add a little bit of olive oil at the end of cooking.