Many industrial seed oils—including corn, soybean, canola, peanut, grapeseed, cottonseed, and sunflower oil—and margarine are high in omega-6 fats, especially linoleic acid. These oils are widely used in processed and restaurant foods. At Comfort Keto, we avoid seed oils and margarine, choosing avocado, olive, and coconut oils, plus grass-fed butter and organic lard for cooking, baking, frying, and dressings.