Nonstick cookware when heated releases fluoride. That nonstick coating is made from the chemical,  PFOA, (perfluorooctanoic acid). See the embedded word "fluoride"?

http://sacmag.com/media/Sacramento-Magazine/Medical-Guide/Annual-2006/Fact-or-Fiction-/     Perfluorooctanoic acid, or PFOA, a synthetic chemical used to make nonstick cookware, causes adverse effects in laboratory animals, and the EPA reports that PFOA has been found both in wildlife and humans. Once inside the human body, PFOA doesn’t easily break down; it sticks around for a long time.
In spite of the fact that the EPA has called for a 95 percent reduction of PFOA in products and plant emissions by 2010 and total elimination of PFOA by 2015, the agency says it doesn’t believe there is reason to stop using these products. EPA research is ongoing....If this information sounds too vague to make you comfortable, there is always cast-iron cookware. When these pans are seasoned over time, they accumulate nonstick properties, without using chemicals.

http://www.environmentalhealth.ca/greatchefs.htm          Recent news that the Teflon chemical, PFOA, (perfluorooctanoic acid,) is a likely human carcinogen has consumers scrambling for alternatives. Cautious cooks are looking for pots and pans which cook well without health risks. Instead of the latest in cookware, why not go for the tried and true.

Cast iron and good quality stainless steel are top choices for healthy cooking. Cast iron pans have been around for more than a century. They are so durable that they are passed down from one generation to the next.
 
http://www.mercola.com/products/cast-iron-cookware      Teflon is the most popular cookware in America. So what's wrong with it?

Well, for starters, teflon-coated aluminum contains perfluorooctanoic acid (PFOA), a synthetic chemical used in its production, creating its soap-like slipperiness and non-stick finish. PFOA has become very controversial because of health dangers linked to it.

    *      In April of 2006, multiple class action lawsuits were filed against DuPont representing consumers in twenty states and the District of Columbia. DuPont was charged with exposing millions of Americans to health risks from pans containing PFOA. (And that DuPont knew of the risks but failed to disclose them.) 1
    *      In May 2006, DuPont said it received a subpoena from the U.S. Justice Department's Environmental Crimes Section to turn over documents about PFOA safety. This came just a month after DuPont settled a lawsuit -- with a fine of $10.25 million -- by the Environmental Protection Agency alleging that DuPont hid health data about PFOA for twenty years. 2,3
    *      In March 2006, a scientific advisory panel to the Environmental Protection Agency (EPA) advised that PFOA be labeled a "likely carcinogen".4 Manufacturers are to phase out 95 percent of production by 2010, and totally by 2015. It is important to note that this is a voluntary reduction by manufacturers.

Yet, despite mounting evidence, DuPont still claims that PFOA is safe ...