New Study Shows Fluoride Safe

steven_novellaby via NeuroLogica Blog

Public controversy over the safety of fluoridation programs continues, in some towns leading to successful resistance to water fluoridation. As a public health issue, the scientific evidence for risks vs benefits should be at the core of this debate. A new study sheds significant light on this question.

Fluoride_YourNotGoingToPoison_250pxSome anti-fluoridation activists will latch onto any claim they feel supports their opposition (common behavior in any context), and this leads to a great deal of nonsensical conspiracy-mongering. My favorite is the claim that public water fluoridation is all a plot to allow companies to cheaply dump industrial waste into the public water supply.

These sorts of claims distract from the real issues, and in my opinion does a disservice to the anti-fluoridation movement. I don’t mind the existence of opposition movements, even if I disagree with their position. They can serve a useful function in driving public debate and keeping the powers that be honest and transparent.

When they utilize highly emotional but irrational arguments, however, they relegate their own movement to the crank fringe, they marginalize what might be legitimate issues, and they can lead segments of the public into making fear-based and ultimately harmful decisions. They also miss their opportunity to run an effective and ethical opposition which focuses on legitimate scientific issues, and to effectively advocate for the rights of individuals. (Again, I am not saying I agree with any particular such campaign – but at least focus on the real issues.)

Fluoride 802_250pxPublic water fluoridation programs are a proven safe and effective method to improve oral health. It should also be noted that such programs do not always add fluoride to water – they deliberately adjust the level of fluoride in the water supply to optimal levels. Sometimes this involves reducing fluoride levels, but often involves adding fluoride.

The new study involves the safety of such fluoride programs, and specifically addresses the question of whether or not there is an adverse effect on neurological development, as measured by standard IQ testing.

This issue was recently in the news following the infamous “Harvard study” that claimed to show an adverse effect from fluoride on IQ. I discussed the study here – which was really a systematic review and meta-analysis. In short, the researchers looked at studies that compared high vs low exposure to fluoride and measured IQ. They found that the high exposure group had a lower IQ compared to the low exposure group.

There are two main flaws with concluding from this study that fluoridations programs are not safe. The first is  .  .  .

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