Harvard Study Confirms Fluoride Reduces Children's IQ

www.huffingtonpost.com - April 4th, 2013

A recently-published Harvard University meta-analysis funded by the National Institutes of Health (NIH) has concluded that children who live in areas with highly fluoridated water have "significantly lower" IQ scores than those who live in low fluoride areas.

In a 32-page report that can be downloaded free of charge from Environmental Health Perspectives*, the researchers said:

A recent report from the U.S. National Research Council (NRC 2006) concluded that adverse effects of high fluoride concentrations in drinking water may be of concern and that additional research is warranted. Fluoride may cause neurotoxicity in laboratory animals, including effects on learning and memory ...

To summarize the available literature, we performed a systematic review and meta-analysis of published studies on increased fluoride exposure in drinking water and neurodevelopmental delays. We specifically targeted studies carried out in rural China that have not been widely disseminated, thus complementing the studies that have been included in previous reviews and risk assessment reports ...

Findings from our meta-analyses of 27 studies published over 22 years suggest an inverse association between high fluoride exposure and children's intelligence ... The results suggest that fluoride may be a developmental neurotoxicant that affects brain development at exposures much below those that can cause toxicity in adults ...

Serum-fluoride concentrations associated with high intakes from drinking-water may exceed 1 mg/L, or 50 Smol/L, thus more than 1000-times the levels of some other neurotoxicants that cause neurodevelopmental damage. Supporting the plausibility of our findings, rats exposed to 1 ppm (50 Smol/L) of water-fluoride for one year showed morphological alterations in the brain and increased levels of aluminum in brain tissue compared with controls ...

In conclusion, our results support the possibility of adverse effects of fluoride exposures on children's neurodevelopment. Future research should formally evaluate dose-response relations based on individual-level measures of exposure over time, including more precise prenatal exposure assessment and more extensive standardized measures of neurobehavioral performance, in addition to improving assessment and control of potential confounders.

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*Download 32 Page Report 

Fluoridated Water, Good or Bad?

www.huffingtonpost.com - January, 16th, 2013

Let's talk about water fluoridation. And, being that I'm a dentist, you'll probably be a little surprised by my stance on it. At least in terms of it being included in water.

As you likely know, fluoride is a chemical that is commonly found in most toothpaste brands. People use fluoridated toothpaste as a means to strengthen teeth (i.e. prevent cavities) and normally don't think much further about it. Which is fine -- that's pretty much how it's marketed.

Since the late 1990s, the United States Food and Drug Administration has made it mandatory for toothpastes to carry a warning in regards to fluoride usage. But why would the FDA post a warning on a toothpaste ingredient? Doing research on what fluoride is reveals that the chemical is now considered a potential toxic drug, and ingesting enough of the ingredient could be harmful.

Now, I don't want to scare you -- brushing your teeth with fluoride toothpaste isn't harmful. Nor is a dentist using a gel-type fluoride treatment when you get your checkup. Uses like that are topical usages -- you don't ingest it. And even if you do ingest some toothpaste (etc), the levels of fluoride aren't going to pose any threat. And it does prevent cavities.

But in terms of it being added to water, I'm not so sure that's a good thing. Adding fluoride has been a standard in many countries for years. However, several countries (mainly Europe) have taken an active stance on banning fluoride from their drinking water. And I'm with them -- I do not see the good in fluoridating our drinking water. I definitely see the reasoning why countries would add it -- it helps prevent cavities. But as a dentist, I think cavity prevention can be done just as effectively without putting fluoride in our water. To me, the "bad" it can (potentially) do outweighs the good.

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