Overall, canola oil has the most balanced fatty acid composition, not only due to a good omega-6:omega-3 ratio, but also because it contains a high percentage of monounsaturated fat which is beneficial to human health. Olive oil, although moderately high in the omega-6:omega-3 ratio, also contains a high percentage of monounsaturated fat. Most importantly, olive oil also contains a high amount of antioxidants and the substance squalene that has been shown to have anti-cancer effects. Therefore, olive oil is another good choice of healthy food oil. Deep sea fish oils such as salmon fat are excellent sources of omega-3. Flaxseeds oil is also a rich source of omega-3. It is a good option to use for a omega-3 supplement.