Pregnant women’s urine fluoride levels are linked to lower intelligence in their offspring, according to a US government-sponsored study published in Environmental Health Perspectives (September 2017), and at levels commonly found in US adults.
Fluoridation lobbyists cavalierly dismissed this study because it was conducted on women from
which makes it irrelevant to the Mexico . However,
urine fluoride levels in healthy US, they claim adults in US fluoridated areas are similar and is a measure of one's total fluoride intake from all sources. US
The lead researcher, Dr. Howard Hu, also disagrees with their assessment. He is quoted in the media as saying “This is a very rigorous epidemiology study. You just can’t deny it. It’s directly related to whether fluoride is a risk for the neurodevelopment of children. So, to say it has no relevance to the folks in the
, seems disingenuous.” US
water suppliers add unnecessary fluoride chemicals into
public water supplies in a failed attempt to reduce tooth decay for political
not scientific reasons. US
Hu says the study “also suggests that the prenatal nervous system may be more sensitive to fluoride compared to that of school-aged children.”
This new careful investigation, by respected researchers from respected institutions and published in a respected peer-reviewed journal, adds to a frightening trend. Over 300 studies now link fluoride to neurotoxic effects – 50 of them human – over 20 at fluoride levels allowed in US water supplies. Taken together, with this new study added, the evidence is now very strong that fluoride exposures common in the USA is causing IQ loss in at least some children.
According to the Fluoride Action Network (FAN), “The loss of IQ is very large. The child of a mother who was drinking 1 ppm fluoride water would be predicted to have IQ points lower than if the mother had drunk water with close to zero fluoride in it… Such a drop of IQ in the whole population would half the number of very bright children (IQ greater than 130) and double the number of mentally handicapped (IQ less than 70).”
Urine fluoride is a good indicator of total fluoride intake from all sources. When drinking water is the dominant source of fluoride, urine fluoride and water fluoride are usually about the same So, the average urine fluoride level in this study of 0.9 mg/L implies that women were ingesting the same amount of fluoride as women drinking water with 0.9 mg/L fluoride, according to FAN.
Up until 2011, government agencies advised artificially fluoridating water up to 1.2 mg/L. Because of the growing dental fluorosis epidemic, they revised it downward to 0.7 mg/L. But it’s just a recommendation. Not all water suppliers comply. Also, many
communities are served naturally fluoridated water up to 4 mg/L.
Fluoridated water is not the only fluoride source that adds to the bodies total fluoride burden. Virtually all foods and beverages have some fluoride. Fluoride is absorbed into the bloodstream from topical application of fluoridated dental products and is a component of air pollution.
Fluoridation lobbyists, such as the American Dental Association, the American Fluoridation Society and the Children’s Dental Health Project (sponsored by the
of Pediatrics) erroneous claim that American Academy
Mexican mothers had fluoride exposures higher than found in the
and therefore the study isn’t applicable to American women.
They fail to understand the urine levels come from a mix of
sources. What’s relevant is that the fluoride levels found in Mexican
mothers urine is similar to that found in Americans regardless of the sources of
This study was performed by respected leading researchers in environmental neurotoxins. It was funded by $3 million in grants from the US National Institute of Environmental Health Sciences. It was published in the premier journal for environmental health after undergoing peer-review.
Understandably, this study cuts to the heart of the dental profession's support of fluoride to combat dental decay. But rather than a knee-jerk reaction to deny the importance of this study in the interests of teeth, perhaps dentists should take a more holistic perspective and consider the entire child, including his cognitive development. How many IQ points loss would you consider is worth one cavity prevented???