Forty years ago, feline hyperthyroidism was virtually nonexistent. Now it’s an epidemic — and some scientists think a class of everyday chemicals might be to blame.
The mystery behind feline hyperthyroidism: Although definitive answers remain elusive, scientists are narrowing in on one possible explanation: A steady drumbeat of research links the strange feline disease to a common class of flame retardants that have blanketed the insides of our homes for decades.
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Scientists have found chemical flame retardants in the blood of pet dogs at concentrations five to 10 times higher than in humans, but lower than levels found in a previous study of cats.
Journal Reference: Marta Venier, Ronald A. Hites. Flame Retardants in the Serum of Pet Dogs and in Their Food. Environmental Science & Technology, 2011; 110418142654070 DOI: 10.1021/es1043529