#5: Hydrogenated oils
Oils that cannot be extracted from their source naturally become hydrogenated by the chemical processing required. Vegetable oils, for example, are not just chemically extracted, they are also colored and then have their natural scent removed.
The end product looks nice, but is full of unhealthy omega-6 fats. Unfortunately most commercial baked goods use hydrogenated oils, not to mention fried snack foods.
Instead – Choose naturally extracted olive, soy, or canola oil for home cooking, and avoid store bought cakes and cookies.