May 29, 2014

A recent New Zealand study published in the American Journal of Public Health, which claims to exonerate a link between fluoride and lowered IQ, is scientifically flawed and reveals blatant examiner bias, says the Fluoride Action Network (FAN).

The study’s co-author, pro-fluoridation activist and dentist Jonathan Broadbent, claimed: “Our findings will hopefully help to put another nail in the coffin of the complete canard that fluoridating water is somehow harmful to children’s development.”  However, the limitations of Broadbent’s study mean it is inconclusive at best.

Paul Connett, PhD, FAN Executor Director says, “Even if this study was high quality science, which it is not, it could not cancel out over 100 animal and 45+ human studies showing fluoride can cause brain deficits. Broadbent’s research has serious weaknesses.”

For example:

1) The study’s small sample size of non-water-fluoridated subjects (99 compared to 891 water-fluoridated subjects) means it has low ability to detect an effect. Even worse, 139 subjects took fluoride tablets, but Broadbent does not say which. Since fluoride tablets are only recommended for children living in non-water-fluoridated areas, there may have been little difference in total fluoride intake between his comparison groups. Broadbent’s failure to consider total fluoride exposure may thus explain why he found “no effect”.

2) Broadbent falsely criticizes 27 previous studies linking fluoride to children’s lower IQ – implying they didn’t adjust for any potentially confounding variables like lead, iodine, arsenic, nutrition, parent’s IQ, urban/rural and fluoride from other sources.  In fact, several of the studies did control for these factors.  A good example is Xiang’s work, which has controlled for lead, iodine, arsenic, urban/rural, fluoride from all sources, parent’s education, and socio-economic status (SES).  Ironically, Broadbent failed to adjust for most of these factors in his own study despite having access to information on many of them.

3) Of the four factors Broadbent did adjust for, most were only crudely controlled. For example, SES was determined solely by the father’s occupation and classified into just 3 levels. Inadequate adjustment for SES could obscure a lowering of IQ caused by fluoride, because almost all of the non-water-fluoridated children came from one outlying town that had lower SES than the fluoridated areas.


“Broadbent is one of New Zealand’s leading political promoters of fluoridation.  He is a dentist not a developmental neurotoxicologist,” says Connett.  “This single weak study is hardly sufficient to outweigh the substantial body of evidence showing fluoride’s potential to harm the developing brain at relatively low exposure levels.”

Fluoride Action Network

Fluoride update from Fluoride Action Network

There updates and the last comment on our page are longish, but here are the links so you can read them for yourselves:


2. This one is about well water and Fluoride content. If you use well water this is worth reading. According to Stephenparticle, the author, both tea and tobacco are HIGH in Fluoride. The comment is long and at the end of the page

Santa Fe Global Water Resource Center

The Santa Fe Global Water Resource Center opens on June 1st at the De Vargas Mall in Santa Fe. This exciting next step will bring us closer to the realization of the Santa Fe Global Water Festival and will offer products and services that promote water awareness locally and globally. Let us know if you want to get involved. We welcome your financial and other contributions, water products and will offer a way for your organization to be represented as a resource. The center is a collaboration with Blessings, a Spiritual Coop Gallery and Bazaar and is located opposite the Tree House in the Mall. If you have products that represent a Spiritual tradition and you would like to rent space in the Coop, contact Dorjee at

More to come!!!!!!