Tagged: IQ

Anti-fluoride authors indulge in data manipulation and statistical porkies - Open Parachute

Ken Perrott Mar 12, 2017

Darrell Huff & Irving Geis wrote a classic book – How to Lie With Statistics. They outline various ways data can be presented to give the wrong story. However, there is an even more naive use of statistics to misrepresent data – just declare that a relationship is statistically significant, don’t show any data or statistical analysis. Unfortunately, many … Read More

EPA comprehensively debunks anti-fluoride claims of a fluoride-IQ effect - Unsorted

Ken Perrott Feb 26, 2017

The US environmental Protection Agency (EPA) has denied an anti-fluoride petition to ban community water fluoridation. The document outlining its reasons for declining the petition is valuable because it considers all the arguments and evidence presented in the petition and comprehensively shows them to be misleading or even false. This is a humiliating defeat for the petitioners – the US  Fluoride Action … Read More

Water fluoridation – what to expect in the near future - Open Parachute

Ken Perrott Jan 21, 2017

Community water fluoridation (CWF) will persist in science news for the foreseeable future – not for any valid scientific reason but because of reaction to political pressures against it. This is particularly so in New Zealand where our parliament will be discussing legislative changes to fluoridation decision-making this year. This is not to say that all the relevant news will be … Read More

More nails in the anti-fluoridation myths around IQ and hypothyroidism - Open Parachute

Ken Perrott Jan 16, 2017

A new Canadian study shows no relationship of cognitive deficits or diagnosis of hypothyroidism with fluoride in drinking water. This work is important because it counters the claims made by anti-fluoride campaigners. While the campaigners cite scientific studies to support their claims, those studies are usually very weak, or irrelevant because they involve areas of endemic fluorosis where drinking … Read More

50% of people who lived in 1917 were intellectually disabled - Mere Conjecture

Jack Auty Jan 07, 2017

More than half the world was intellectually disabled prior to 1917CE….. if you extrapolate the Flynn effect. This blog will be an interesting dive into IQ, intellectual disability, crime, time travel and the Flynn effect. Let’s start by saying that you are probably “smarter” (whatever that means) than your parents. That’s right, when you were a pimply, hormone filled, teenager … Read More

Anti-fluoride IQ claims are false - Open Parachute

Ken Perrott Jan 06, 2017

Anti-fluoridation campaigners’ claims that community water fluoridation reduces IQ are simply false. That is the conclusion of  Alex Kasprak – and he says why in his new Snopes.com article (see Fact Check -Fluor-IQ). Snopes.com tackles fluoridation claims. These days anti-fluoridation activists use this claim as their main argument – and they often cite scientific articles to back it up. Read More

Large Swedish study finds no effect of fluoride on IQ - Open Parachute

Ken Perrott Jan 05, 2017

A significant new Swedish study shows fluoride in drinking water, at the concentrations used for community water fluoridation, has no effect on IQ or other measures of cognitive ability. Fluoride levels in Swedish drinking water (mg/L). Variation between municipalities. Source: Aggeborn & Öhman (2016). Similarly, it has no effect on diagnosis or prescription of medicines for ADHD, depression, psychiatric … Read More