Widely used in Mediterranean countries, olive oil is a highly valuable and expensive oil and is well known for its health and medicinal benefits. It is prized primarily as it is the best and healthiest type of oil. Olive oil is considered good for the heart and it is primarily helpful in keeping the heart and arteries in shape. Frequently referred to in the Bible and other ancient historical texts, it is today high in demand because it is a healthier choice. It is a staple part of Mediterranean cuisine and therefore is a significant crop in agriculture of the area.