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Fluoride & IQ

Published Research by 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 20062) 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.

Studies have Repeatedly Linked Fluoride to Reduced IQ and Brain Damage

There are so many scientific studies showing the direct, toxic effects of fluoride on your body, it’s truly remarkable that it’s NOT considered a scientific consensus by now. Despite the evidence against it, fluoride is still added to 70 percent of U.S. public drinking water supplies.

It amazes me that the medical (and dental) communities are so stubbornly resistant to connect the dots when it comes to the skyrocketing increase of cognitive decline in adults, and behavioral issues in children (ADD, ADHD, depression and learning disabilities of all kinds). In fact, there have been over 23 human studies and 100 animal studies linking fluoride to brain damage. Fluoride can also increase

One of the most common sources of fluoride exposure for Americans is their tap water, as many municipalities still fluoridate their water. But did you know your FOOD may also expose you to fluoride on a regular basis?

Not only are certain pesticides fluoridated, such as cryolite,1 food processors may also use sulfuryl fluoride as a direct fumigant on certain foods, and for preventing pests in closed storage structures. Fast food wrappers are yet another source of fluoride, scientists warn.

Pesticides and Fumigants May Turn Food Into Source of Fluoride

Sulfuryl fluoride, a commonly used fumigant, breaks down to fluoride after application.2 As noted by Fluoridealert.org:3

“Unlike virtually every other western country, the EPA [Environmental Protection Agency] does not require that food processors remove food prior to the fumigation. As a result, any food that is being stored in the facility during a structural fumigation will be contaminated with fluoride.”

According to EPA estimates, foods most commonly fumigated include cocoa powder (100 percent), dried beans (100 percent), walnuts (99 percent) and dried fruits (69 percent).

And, while only about 3 percent of rice is fumigated, the levels of fluoride in fumigated brown rice specifically tends to be the highest (12.5 parts per million [ppm] compared to 8.4 ppm for cocoa powder).4

The reason certain items, such as cocoa, have a 100 percent chance of being contaminated with fluoride is because the EPA allows direct application of sulfuryl fluoride on such crops.

Direct application is also permitted on coffee. According to a 2005 editorial by the late Albert Burgstahler, PH.D., who was a professor emeritus of chemistry, “Fluoride residues in food fumigated with sulfuryl fluoride are excessively high and are at levels known to cause serious adverse health effects, including crippling skeletal fluorosis.”5

Non-organic grape juice is also best avoided, as the fluoridated pesticide cryolite is commonly used on grapes grown in the U.S.6

Fast Food Wrappers Are a Common Source of Fluoride Exposure

According to recent research,7,8,9,10,11,12,13,14,15 about one-third of fast food wrappers and containers also contain fluorine, which suggests perfluorinated chemicals (PFCs) were used to give the paper that slick surface, making it oil and grease resistant.

PFCs such as perfluorooctanoic acid (PFOA, widely used to make non-stick cookware) and perfluorooctanesulfonic acid (PFOS, a key ingredient in stain-resistant fabrics) are associated with a wide array of health problems, including cancer, heart disease, immune and thyroid dysfunction, infertility, low birth weight and developmental problems.

In all, some 400 samples of food packaging from 27 fast food chains in the U.S. were tested between 2014 and 2015. This included packaging from Jimmy John’s, Quiznos, Starbucks and Dunkin’ Donuts in the Boston, Seattle, Washington D.C., San Francisco and Grand Rapids areas.

On average, 33 percent of them contained fluorine. Dessert and bread wrappers were affected the most, with 56 percent containing fluorine, whereas only 20 percent of paperboard samples (such as pizza boxes and French fry containers) were affected.

Of the 27 restaurant chains, Jimmy John’s, Taco Time and Quiznos fared the worst, with 100 percent of the samples collected from these chains testing positive for fluorine.

Eighty percent of wrappers from Chick-fil-A also tested positive, followed by Chipotle, at 65 percent.16

PFOA and PFOS Were Phased Out in 2011 but Still Appear in Use

Previous research17,18,19 has confirmed that fluorinated chemicals can indeed migrate from the packaging into the food.

The amount depends on the temperature of the food and how long it remains in contact with the wrapper. As a general rule, hot food items tend to release more chemicals than cold ones.

American manufacturers voluntarily agreed to phase out PFOA and PFOS in 2011 due to concerns about their safety, but other countries still use them and, clearly, some companies are still using them in the production of food packaging.

Dr. Philippe Grandjean, an environmental health researcher and professor at the Harvard T.H. Chan School of Public Health, commented on the findings, saying:

“Perfluorinated compounds come from a variety of consumer products, and clearly the food wrapping materials likely constitute an important source. Limiting our current exposures should be regarded a public health priority.”

How to Avoid Fluoride From Fast Food Wrappers

Lead author Laurel Schaider, Ph.D., a research scientist at the Silent Spring Institute, told CNN:20

“‘Unfortunately, for consumers, there’s no easy way to tell just by looking at packaging whether or not it contains fluorinated chemicals

For people who wish to reduce their exposure to these chemicals, they may be able to take some steps … to reduce that migration from packaging into food for instance, by taking the food out of the packaging sooner rather than later.’

You could also ask that your fries or dessert be served in a paper cup or a noncontact paper bag. This is the outer bag all your items are usually put into when you get your food.

More than anything, Schaider urges consumers to put pressure on their favorite fast food chains to switch to packaging that doesn’t contain fluorinated chemicals.

‘I think that this study provides yet another reason to support the idea that eating more fresh food and more home-cooked meals is better for our health,’ she said ”

Environmental Working Group Calls for End of PFC Use in Food Wrappers

In a companion report,21 the Environmental Working Group (EWG) urges fast food companies to stop using fluorinated compounds in food packaging altogether, and calls for the U.S. Food and Drug Administration (FDA) to further restrict the use of these compounds in products that come into contact with food. According to the EWG:

“The FDA has approved 20 next-generation PFCs specifically for coating paper and paperboard used to serve food.

These chemicals have not been adequately tested for safety, and trade secrecy laws mean that, in some cases, the limited safety data submitted to the EPA does not publicly disclose the identity of the specific chemicals or even the companies submitting them for approval.

But what little information manufacturers have provided to regulators is troubling. In documents filed with the EPA, DuPont reported that a next-generation chemical used to produce food contact paper, called GenX, could pose a ‘substantial risk of injury,’ including cancerous tumors in the pancreas and testicles, liver damage, kidney disease and reproductive harm

[R]etired EPA toxicologist and senior risk assessor Deborah Rice[,Ph.D.,] said GenX has ‘the same constellation of [health] effects you see with PFOA. There’s no way you can call this a safe substitute.’ PFC-free paper is readily available, as shown by the fact that the tests detected no fluorine in more than half of the paper samples.”

The FDA did take action against three specific kinds of PFCs in food packaging just last year.22,23 Based on safety information, it withdrew its approval for diethanolamine salts of mono- and bis, pentanoic acid and perfluoroalkyl-substituted phosphate ester acids.

None of these PFCs may be used in the manufacturing of oil and water repellants for paper and paperboard that will come in contact with food. It seems it would be wise to ban all PFCs from such items, considering the fact that many of them have similar health effects.

Some of the restaurant chains have responded favorably, promising to look into the matter and make changes as needed. Chris Arnold, a spokesman for Chipotle, told Bloomberg24 the study “seems to suggest that there is room for improvement,” adding the company is “in the process of obtaining documentation from our suppliers that the packaging materials they supply to Chipotle are PFC-free.”

Susan Lintonsmith, CEO of Quiznos also told Bloomberg the company “takes food safety very seriously,” and that they are “working with our suppliers to fully understand the situation.”


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