Some experts believe omega-6-rich oils may promote inflammation and elevate disease risk, though research is mixed.
However, many packaged foods contain highly processed vegetable and seed oils (e.g. soybean oil, corn oil, canola oil, sunflower oil), which are high in omega-6 fats. These fats are relatively unstable and prone to degradation during processing. Some experts believe omega-6-rich oils may promote inflammation and elevate disease risk, though research is mixed.