Thyroid Gland: Fluoride

Health written question – answered on 27th March 2007.

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Photo of David Drew David Drew Labour, Stroud

To ask the Secretary of State for Health what research she has (a) commissioned and (b) evaluated on the relationship between fluoridisation and thyroid disorders.

Photo of Rosie Winterton Rosie Winterton The Minister of State, Department of Health

The Department has commissioned and funded two research studies on fluoridation and health. "A Systematic Review of Public Water Fluoridation" published by the University of York in 2000 identified two studies, which found no significant association between thyroid disorders and water fluoridation, and one study with a positive association. However, the positive study looked at combined fluoride/iodine intakes and has not been published in a peer review journal.

"Water Fluoridation and Health" published by the Medical Research Council (MRC) in 2002 endorsed York's recommendation on the need for further research into fluoridation, but accorded low priority to further research on thyroid disorders. This was because the MRC judged the scientific plausibility of an association between water fluoridation and thyroid disease to be low.

We are committed to a continuing programme of research on the effects of fluoridation on health.

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