Navigation Links
Fluoridating water does not lower IQ: New Zealand research
Date:5/19/2014

New research out of New Zealand's world-renowned Dunedin Multidisciplinary Study does not support claims that fluoridating water adversely affects children's mental development and adult IQ.

The researchers were testing the contentious claim that exposure to levels of fluoride used in community water fluoridation is toxic to the developing brain and can cause IQ deficits. Their findings are newly published in the highly respected American Journal of Public Health.

The Dunedin Study has followed nearly all aspects of the health and development of around 1000 people born in Dunedin in 1972-1973 up to age 38.

Lead author Dr Jonathan Broadbent of the University of Otago, New Zealand, says the new research focused on Study members' fluoride exposure during the first five years of their lives, as this is a critical period in brain development, after which IQ is known to be relatively stable.

Dr Broadbent and colleagues compared IQs of Study members who grew up in Dunedin suburbs with and without fluoridated water. Use of fluoride toothpaste and tablets was also taken into account.

They examined average IQ scores between the ages of 7-13 years and at age 38, as well as subtest scores for verbal comprehension, perceptual reasoning, working memory and processing speed. Data on IQ were available for 992 and 942 study members in childhood and adulthood, respectively.

Dr Broadbent says the team controlled for childhood factors associated with IQ variation, such as socio-economic status of parents, birth weight and breastfeeding, and secondary and tertiary educational achievement, which is associated with adult IQ.

"Our analysis showed no significant differences in IQ by fluoride exposure, even before controlling for the other factors that might influence scores. In line with other studies, we found breastfeeding was associated with higher child IQ, and this was regardless of whether children grew up in fluoridated or non-fluoridated areas."

Dr Broadbent says that studies that fluoridation opponents say show that fluoride in water can cause IQ deficits, and which they heavily relied on in city council submissions and hearings, have been reviewed and found to have used poor research methodology and have a high risk of bias.

"In comparison, the Dunedin Multidisciplinary Study is world-renowned for the quality of its data and rigour of its analysis," he says.

"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. In reality, the total opposite is true, as it helps reduce the tooth decay blighting the childhood of far too many people."


'/>"/>

Contact: Dr. Jonathan Broadbent
jonathan.broadbent@otago.ac.nz
University of Otago
Source:Eurekalert

Related medicine news :

1. Soybeans soaked in warm water naturally release key cancer-fighting substance
2. Scientists evaluate different antimicrobial metals for use in water filters
3. Analysis will examine safety of in-hospital underwater births
4. Germ Culprits in Moldy, Water-Damaged Buildings Identified
5. Waterpik Water Flosser Reviews Released Today By WaterpikReviews.net
6. With Home Sales Lagging, Watersong Offers Solution for Seniors
7. Annual Beaches Report Finds Water Quality Lacking Along U.S. Shores
8. Early-life exposure to chemical in drinking water may affect vision, study finds
9. Too Much Bottled Water Might Harm Kids Teeth
10. Leveraging bacteria in drinking water to benefit consumers
11. Chemicals From Soaps, Cleansers Found in Minnesota Waterways
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:10/13/2017)... ... October 13, 2017 , ... The ... to promote standards of excellence for the field of eating disorders, announces the ... – 25, 2018 in Orlando, Florida at the Omni Resort at ChampionsGate. ...
(Date:10/13/2017)... ... ... Apple Rehab Shelton Lakes , which specializes in the delivery of ... part of a disaster drill on October 3rd. , Apple Rehab participated with the ... as well as the Connecticut Long Term Care Mutual Aid Plan (LTC-MAP). The ...
(Date:10/13/2017)... (PRWEB) , ... October 13, 2017 , ... Global Healthcare ... scenic Alexandria Park in Milford, NJ. This free event, sponsored by Global Healthcare ... activity. The fun run is geared towards children of all ages; it is ...
(Date:10/13/2017)... ... ... “The Journey: From the Mountains to the Mission Field”: the story of ... Philippines. “The Journey: From the Mountains to the Mission Field” is the creation of ... taught all ages and currently teaches a class of ladies at her church, which ...
(Date:10/12/2017)... ... , ... Planet Fitness, one of the largest and fastest growing franchisors and ... flagship location in Covington, LA at 401 N. U.S. Highway 190, in January of ... Depot in the Holiday Square shopping center. Its location allows it to serve both ...
Breaking Medicine News(10 mins):
(Date:9/28/2017)... 2017 Hill-Rom Holdings, Inc. (NYSE: HRC), will ... and webcast on Friday, November 3, 2017, beginning at ... at approximately 8:30 a.m. (CDT) / 9:30 a.m. (EDT). ... financial performance and guidance for 2018, Hill-Rom executives will ... operational performance, and long-range financial outlook through 2020. ...
(Date:9/27/2017)... CAESAREA, Israel and NEW YORK , Sept. ... company with mobile health and big data solutions, today announced that its ... today. Please check your local TV listings for when The Dr. Oz ... ... ninth season this month. ...
(Date:9/23/2017)... HORSHAM, Pa. , Sept. 22, 2017 ... received a complete response letter from the U.S. Food ... (BLA) seeking approval of sirukumab for the treatment of ... response letter indicates additional clinical data are needed to ... of moderately to severely active RA. ...
Breaking Medicine Technology: