Cast iron
Cast iron cookware is an old-fashioned favorite for a reason—not only is it super durable, but it's also one of the safest options out there because it doesn't contain any harmful chemicals that could leach into food. In fact, the one "ingredient" that may find its way into your meal (hint: it's in the name!) may actually be of benefit: these pans may add a bit of extra iron to whatever you're cooking, though no one knows exactly how much. Another bonus: Cast iron is naturally nonstick once it's "seasoned" properly with oil, so it requires very little cooking oil or butter, slashing your fat intake. (These are signs you might be eating too much bad fat.)
Titanium
Titanium cookware sets are fairly pricey, but they're one of the safer nonstick varieties available. "Titanium is a safe metal," says Robert Brown, MD, author of the new book Toxic Home/Conscious Home: A Mindful Approach to Wellness at Home. "The nonstick surface may be derived from silicone, a nonporous ceramic coating, titanium, or a combination."