Yes, Cast Iron is Safe Cookware for Cooking. The use of cast-iron cookware has been a staple in many kitchens around the globe for centuries. Cast-iron cooking surfaces have stood out as one of the oldest and most durable materials still being used today, with tests proving their worth when it comes to superior heat distribution. You should cook with cast iron pans because they are great conductors, which means that the heat is evenly distributed throughout the food. Iron also helps transport oxygen through your body to cells and organs so you can stay healthy!