Non-stick cookware contains dangerous PFAs and Teflon coating, which can affect your health over time. On the other hand, cast iron cookware provides you with a nice cooking surface, is 100% natural, and enriches your food with essential iron elements. Non-stick cookware also loses its coatings within a year or 2, however, cast iron cookware will become more non-stick with daily usage and last for generations with proper maintenance.