Omega-6-rich oils don't have same benefits as canola, soybean and olive oils, studies show The Canadian Press Posted: Nov 11, 2013 1:46 PM ET Last Updated: Nov 11, 2013 2:10 PM ET In 2012, Health Canada agreed to let manufacturers of cooking oils containing either omega-6 or omega-3 fatty acids claim on their product labels that these oils help reduce the risk of heart disease by lowering cholesterol. (iStock) A pair of Canadian scientists are challenging the fact that manufacturers of some cooking oils are entitled to make health claims about the products. They argue that new evidence suggests oils...