Canola Oil or Olive Oil: Which Fat is Healthier for Your Body?. According to experts at Stiftung Warentest, the healthiest oil is rapeseed oil.

The ratio of the omega-6 and omega-3 fatty acids is Rapeseed oil is particularly favorable at a ratio of 2:1 - this makes it easier for the body to utilize. The monounsaturated fatty acids in olive oil makes the oil unbeatable as a source of vitamins E and K.