Peckham et al. Thyroid Study: A Step in the Right Direction


Promoters of water fluoridation always attempt to limit the debate to teeth, whilst opponents of fluoridation fight to broaden the debate beyond this narrow bandwidth. This war has played out on an epic scale for decades.

A recent study appearing in J Epidemiol Community Health has added fuel to the fire. The authors concluded:

“In many areas of the world, hypothyroidism is a major health concern and in addition to other factors—such as iodine deficiency—fluoride exposure should be considered as a contributing factor. The findings of the study raise particular concerns about the validity of community fluoridation as a safe public health measure.”

To anyone who is familiar with the anti-fluoridation side of the debate, the findings of this study come as no surprise. As we all know, the US National Research Council stated in 2006:

“Evidence of several types indicates that fluoride affects normal endocrine function or response; the effects of the fluoride-induced changes vary in degree and kind in different individuals. Fluoride is therefore an endocrine disruptor… The effects of fluoride on various aspects of endocrine function should be examined further.”

Scientists, such as Dr. Kathleen Thiessen, a co-author of the NRC Report, raised their concerns about fluoride’s potential effects on thyroid function a long time ago:

“Fluoride appears to have an anti-thyroid effect, or produce hypothyroid effects, in some individuals — meaning that it causes the overall thyroid function to be less than it should. There are several possibilities for it.”

If you would like to stay on top of the issue, start by reading this article by Douglas Main and then visit the Thyroid subsection of FAN’s Research Database. You can voice your opinion and/or engage in further discussion at the official FAN Facebook page.

Further reading:

Molecular Mechanisms of Fluoride Toxicity

Further viewing:

> Margin of safety discussion

Key update:

Experts Respond to Inaccurate Criticism of Brain and Thyroid Studies

Author: AFA Mildura

Administrator, Anti-Fluoridation Association of Mildura

2 thoughts on “Peckham et al. Thyroid Study: A Step in the Right Direction

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