US issues health warning over mercury fillings

They're in millions of mouths worldwide, but have been linked to heart disease and Alzheimer's. Now a report concedes they may have a toxic effect on the body

By Geoffrey Lean, Environment Editor
Sunday, 29 June 2008

Amalgam dental fillings – which contain the highly toxic metal mercury – pose a health risk, the world's top medical regulatory agency has conceded.

After years of insisting the fillings are safe, the US government's Food and Drug Administration (FDA) has issued a health warning about them. It represents a landmark victory for campaigners, who say the fillings are responsible for a range of ailments, including heart conditions and Alzheimer's disease.

Earlier this month, in an unprecedented U-turn, the FDA dropped much of its reassuring language on the fillings from its website, substituting: "Dental amalgams contain mercury, which may have neurotoxic effects on the nervous systems of developing children and foetuses." It adds that when amalgam fillings are "placed in teeth or removed they release mercury vapour", and that the same thing happens when chewing.