Tagged: water

Paul Connett’s misrepresentation of maternal F exposure study debunked - Open Parachute

Ken Perrott Mar 06, 2018

Anti-fluoride campaigners are misrepresenting a recent Mexican study claiming its findings should cause governments around the world to abandon community water fluoridation (CWF). Their claims are unwarranted because the study has a high degree of uncertainty. Activists are misrepresenting the accuracy of the studies findings. Because Mexico has areas of endemic fluorosis the study itself is not relevant to CWF. Read More

Opinion: Anti-fluoride activist commits “Death by PowerPoint” - Open Parachute

Ken Perrott Feb 28, 2018

We have all sat through boring, and counterproductive, PowerPoint presentations. Boring because the presenter breaks all the rule relevant to the preparation of visual displays. And counterproductive because, in the end, the audience does not remember any of the information the presenter attempts to convey. David JP Phillips gives some relevant advice on PowerPoint preparation in the video … Read More

Paul Connett “updates” NZ MPs about fluoride - Open Parachute

Ken Perrott Feb 22, 2018

 Data from Bashash et al., (2017). Despite a statistically significant relationship of child IQ with mothers prenatal urinary fluoride, this explains only about 3% of the huge scatter in the data. I haven’t followed the latest speaking tour of Paul Connett – organised by the local Fluoride Free NZ organisation. But I watched a TV interview with him this … Read More

A brief history of Martian exploration – as the InSight Lander prepares to launch - Guest Work

Guest Work Feb 22, 2018

Helen Maynard-Casely, Australian Nuclear Science and Technology Organisation Roughly every two years Mars and Earth wander a bit closer to each other, making the leap between these two planets a little easier. In July this year, Mars will only be about 58 million kilometres away – and NASA is set to take advantage by launching their next mission … Read More

Why climate change is worsening public health problems - Guest Work

Guest Work Feb 01, 2018

Chelsey Kivland, Dartmouth College and Anne Sosin, Dartmouth College This article was originally published on The Conversation. Read the original article. Around the world, the health care debate often revolves around access. Dr. Tedros Adhanom Ghebreyesus, head of the World Health Organization, recently announced: “All roads lead to universal health coverage.” Discussions for how … Read More

Yet another fluoride-IQ study - Open Parachute

Ken Perrott Jan 31, 2018

As with most of these fluoride-IQ studies this one is only relevant to areas of endemic fluorosis (This is from a UNESCO paper and has been corrected for New Zealand. Identification of fluorosis in a country does not imply the whole country is high fluoride). Yes, it’s a bit like groundhog day. Another fluoride-IQ study – and we expect this to … Read More

Science Tank | Fluoride - Guest Work

Guest Work Jan 08, 2018

Conspiratorial people love to claim that the government adds fluoride to water and toothpaste in some dastardly plan to make us all sleepy slaves, helpless to resist their evil bidding. The truth, however, is far less scandalous and far more reassuring – fluoride is your friend, my friend, and geochemistry is how we know this! Teeth are comprised of … Read More

The Havelock North drinking water inquiry: A wake-up call to rebuild public health in New Zealand - Public Health Expert

Public Health Expert Dec 21, 2017

Prof Michael Baker, Prof Nick Wilson, Prof Alistair Woodward The huge campylobacteriosis outbreak in Havelock North in August 2016 caused by contaminated drinking water was a public health disaster. The second report of the Havelock North Drinking Water Inquiry describes a long list of failings that contributed to the outbreak. In this blog we argue that the failings are much … Read More

Anti-fluoridation campaigners often use statistical significance to confirm bias - Open Parachute

Ken Perrott Dec 06, 2017

Frankly, these days I just get turned off by media reports of studies showing statistically significant relationships as evidence for or against the latest health or other fads. I was pleased to read this Nature article – Five ways to fix statistics – recently as it mirrors my concern at the way statistical analysis is sometimes used to justify or confirm a bias and not … Read More

How to solve the ‘monster’ fatberg problem - Guest Work

Guest Work Nov 09, 2017

By Alison Browne, University of Manchester and Mike Foden, Keele University.  Fatbergs – enormous solid masses of oil, grease, wet wipes and other hygiene products that congeal together to cause major blockages – are wreaking havoc on the sewers of cities around the world. A 130 tonne specimen described as a “monster” recently caused backups … Read More