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Disputed study links fluoride, other chemicals to erosion of child IQs

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Two public health experts warned Saturday about the stunting effects that a wide array of industrial chemicals, including toothpaste ingredient fluoride, may be having on child brain development, in a report some called alarmist.

The pair, Philippe Grandjean of the Harvard School of Public Health and Philip Landrigan from New York’s Icahn School of Medicine, said the number of chemicals known to hinder child brain development have doubled from six in 2006 to 12 today.

In a 2006 review, the pair had identified ethanol, lead, methylmercury, polychlorinated biphenyls, arsenic and toluene as “developmental neurotoxicants”.

Since then, studies have shown another six to be dangerous: manganese, fluoride, chlorpyrifos, dichlorodiphenyltrichloroethane, tetrachloroethylene and polybrominated diphenyl ethers, said the new review.

These are used in everything from pesticides, dry cleaning chemicals and flame retardants.

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Fluoride is commonly used to prevent tooth cavities, and added to tap water in many countries.

Brain development disorders like autism, attention-deficit hyperactivity disorder (ADHD) and dyslexia already affect one in six children today, and there was “strong evidence” of a link between chemical exposure and an increase in diagnoses, the team wrote in a review in the Lancet Neurology medical journal.

“Our very great concern is that children worldwide are being exposed to unrecognised toxic chemicals that are silently eroding intelligence, disrupting behaviours, truncating future achievements and damaging societies, perhaps more seriously in developing countries.”

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They urged mandated testing of all existing industrial chemicals as well as new ones entering the market, and said stronger controls could save billions of dollars in toxicity and poisoning costs.

Other experts, however, said the paper had limitations and was based on an array of previously published surveys of varying reliability.

“Because the paper lacks rigour, it is impossible to assess the validity of the authors’ claims, many of which seem highly speculative. The conclusions of more focused and thorough reviews have been less alarming,” said David Coggon of the University of Southampton’s Lifecourse Epidemiology Unit.

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Others said autism, ADHD, cerebral palsy and dyslexia have not been definitively associated with industrial chemical exposure.

In comments prepared by the Science Media Centre, epidemiologist Jean Golding of the University of Bristol accused the pair of issuing “scare” statements.

“To implicate high fluoride, which they quote as one of the new chemicals… they quote only one paper; this only compares the mean IQs of children in villages with different levels of fluoride, with no allowance made for any other differences, and no actual measurement of fluoride in individual children and comparison with their IQs. This is not good evidence.”

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[Image: “Little Boy Brushing His Teeth In The Bathroom” via Shutterstock]


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Nicolle Wallace explains Trump’s racist attacks are covering his cozy relationship with Jeffrey Epstein and Michael Cohen scandal

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MSNBC host Nicolle Wallace began her Wednesday show saying that President Donald Trump has made it official by making his brand one of "racism." But it prompted her to wonder if his racist attacks against four congresswomen of color could be more about deflecting from other scandals.

Wednesday morning, MSNBC released a video of Trump partying with alleged child molester and rapist Jeffrey Epstein. Trump is seen groping women and slapping their posterior. The first round of Epstein's alleged crimes were downgraded by Labor Secretary Alex Acosta and he was given 13 months in a county jail for just 8 hours, six days a week.

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Trump wasn’t the first president to confront the Supreme Court – and back down

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A key presidential election is approaching. The U.S. Supreme Court hears a case with powerful political implications. The court rules, but the populist president doesn’t care. Our national commitments – to the Constitution, to morality, to the rule of law – seem at risk.Then, the president backs down. The nation survives.

This might be the story of President Trump’s short-lived threat to get a citizenship question on the census in defiance of the Supreme Court. Instead, it’s the story of President Andrew Jackson and Worcester v. Georgia, decided in 1832.

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Fatal drug overdoses drop in US for first time in decades

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Fatal drug overdoses in the US declined by 5.1 percent in 2018, according to preliminary official data released Wednesday, the first drop in two decades.

The trend was driven by a steep decline in deaths linked to prescription painkillers.

"The latest provisional data on overdose deaths show that America's united efforts to curb opioid use disorder and addiction are working," Health and Human Services Secretary Alex Azar said, though he cautioned the epidemic would not be cured overnight.

The total number of estimated deaths dropped to 68,557 in 2018 against 72,224 the year before, according to the figures released by the Centers for Disease Control and Prevention (CDC).

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