A top dietician from the British Heart Foundation has delved into the health benefits of a specific type of vegetable oil. Senior dietician Tracy Parker took a closer look at rapeseed oil, which like sunflower and corn oil, is derived from the seeds of plants in the mustard and cabbage family. She highlighted that it's low in saturated fat - the kind that can hike up cholesterol levels. In fact, she revealed that it boasts the lowest level of saturated fat of any oil - just half that of olive