Olive oil is a rich source of monounsaturated fatty acids and it also has high-antioxidant content. It is beneficial for controlling cholesterol levels and possesses numerous other health benefits. The oil is a healthful replacement for animal fats and Mediterranean countries often use olive oil in the production of pastries and cakes in place of butter or margarine; particularly in breakfast pastries.Olive oil is not only more readily accepted by the digestive system and stomach, but it may also promote the secretion of pancreatic hormones and bile, which help decrease the likelihood of gallstones. This can protect the stomach from gastritis or possible ulcers. Research in Spain also shows that olive oil can help prevent colon cancer.