Since the end of World War II, water fluoridation has been falsely hailed by the CDC as one of the top great public health achievements of the 20th century, but a new study has raised serious questions about its role as a potential neurotoxin in utero:
The study, published in the journal JAMA Pediatrics on Monday, found that increased levels of fluoride exposure during pregnancy were associated with declines in IQ in children. Previous research has made similar findings, but this is the first such study to evaluate the effect of fluoride on populations receiving what the US Public Health Service considers optimal levels of 0.7 milligrams of fluoride per liter of drinking water, such as in the United States and Canada.
The authors of the new study assessed 601 Canadian mother and child pairs, tracking the fluoride exposure of 512 of the mothers by looking at the average concentration of fluoride in urine samples taken throughout their pregnancies as a proxy for prenatal fluoride exposure. The authors also estimated the mothers’ daily fluoride intake by surveying their beverage intake, including tap water.
Between the ages of 3 and 4, all children born from the studied mothers were tested for IQ.
The authors found that for each additional 1 milligram per liter in concentration of fluoride in a mother’s urine, there was a 4.5-point drop in IQ in males. The study did not find such a significant association in female children, nor did it examine why boys were more significantly affected.
The researchers say that further investigation into whether boys are more vulnerable to fluoride neurotoxicity is needed, especially considering that boys have a higher prevalence of neurodevelopmental disorders such as autism and attention-deficit disorder.
The researchers also measured the fluoride intake in 400 of the mothers against their children’s IQ scores. They say this measure might reflect postnatal exposure to fluoride because a child is probably ingesting the same type of water as the mother did during pregnancy.
The authors believe that urine concentration better reflects prenatal exposure. They found that for every 1 mg/L average increase in fluoride intake by a mother, there was a 3.7-point drop in the child’s IQ, regardless of gender.
“At a population level, that’s a big shift. That translates to millions of IQ levels lost,” said study author Christine Till, an associate professor in the Department of Psychology at York University in Toronto.
Till and her colleagues controlled their findings for income and education, as well as other elemental exposures such as lead, mercury, manganese, PFOA and arsenic, but acknowledged that there may be unknown exposures that could have influenced their findings. “There will always be things that we don’t measure, because we didn’t know it existed,” Till said.
This study merely confirms what a 2014 Harvard study found — a fact that has been known to scientists for over 100 years — that fluoride is one of the most toxic substances known to human beings. The naysayers will always point out that is exists “naturally” in the environment, but they don’t tell you that the fluoride they put in our water supply is a completely different, and more toxic, form of fluoride, a literal industrial waste product from chemical fertilizers and nuclear weapons.
During the Manhattan Project to develop nuclear weapons, the project managers were more concerned about the workers being exposed to fluoride used in the manufacturing process than they were to the radioactive nuclear material itself. Let that sink in for a moment. And yet it’s over 70 years later and they are just now figuring out that fluoride “might” have a detrimental effect on developing fetuses. When are people going to stop believing that “government incompetence” can adequately explain this ongoing denial of reality?