Fluoride Developmental Neurotoxicity
NEW STUDY FINDS PRENATAL FLUORIDE EXPOSURE LOWERS IQ IN CHILDREN. The first U.S. Government-funded study investigating prenatal neurological damage from fluoride, Prenatal Fluoride Exposure and Cognitive Outcomes in Children at 4 and 6–12 Years of Age in Mexico, finds that each 0.5 part per million (ppm) increase in a pregnant woman’s urine fluoride levels reduced her child’s IQ by 2.5 – 3 points.
The full peer-reviewed study, a 12 year analysis of data from 287 mother-child pairs, was published in the journal Environmental Health Perspectives (9/19/2017), and can be downloaded at the U. S. National Institutes of Health (NIH) website: https://ehp.niehs.nih.gov/wp-content/uploads/2017/09/EHP655.alt_.pdf
The new study is unique in approach, size, and duration, but it joins over 50 other human-based studies finding evidence of fluoride-based cognitive damage affecting IQ.
FLUORIDE & IQ: THE 51 STUDIES: “As of September 2017, a total of 58 studies have investigated the relationship between fluoride and human intelligence, and over 40 studies have investigated the relationship fluoride and learning/memory in animals. Of these investigations, 51 of the 58 human studies have found that elevated fluoride exposure is associated with reduced IQ, while 45 animal studies have found that fluoride exposure impairs the learning and/or memory capacity of animals. The human studies, which are based on IQ examinations of over 12,000 children, provide compelling evidence that fluoride exposure during the early years of life can damage a child’s developing brain.”
DENTAL FLUOROSIS IS A MARKER FOR COGNITIVE IMPAIRMENT. “Association of lifetime exposure to fluoride and cognitive functions in Chinese children: A pilot study“(Choi, et al. / Neurotoxicology and Teratology / Jan-Feb. 2015), reports the results of a simple, specific IQ test: the child’s ability to repeat a sequence of numbers both forwards and backwards. Subjects included children with lifetime exposures to fluoride levels overlapping the range of levels allowed in U.S. fluoridation programs. Even children with very mild dental fluorosis performed less well than children without fluorosis.
STUDY FINDS A RELATION BETWEEN ADHD & DRINKING FLUORIDATED WATER. “Exposure to fluoridated water and attention deficit hyperactivity disorder prevalence among children and adolescents in the United States: an ecological association” by Christine Till and Ashley Malin (York University, Toronto / Environmental Health / February 27, 2015), the first study to systemically examine the relationship between a specific behavioral disorder and fluoridation found that U.S. States with higher rates of artificially fluoridated water had a higher prevalence of Attention-Deficit/Hyperactivity Disorder (ADHD). Water fluoridation rates “significantly positively correlated with state prevalence of ADHD for all but one year examined.”
“Expanding the test set: Chemicals with potential to disrupt mammalian brain development.” EPA Review article. Neurotoxicology and Teratology 52 (2015) 25 / William R. Mundy, et al. PDF.
“Building a Database of Developmental Neurotoxicants: Evidence from Human and Animal Studies.” EPA Chart. W. Mundy, et al. Neurotoxicology and Teratology. PDF.
Both documents were approved by the National Health and Environmental Effects Research Laboratory (NHEERL), a division of EPA.
“Nominations to the Report on Carcinogens and Office of Health Assessment and Translation; Request for Information. “ A Notice by the National Institutes of Health. Federal Register, The Daily Journal of the United States Government (10/07/2015).
“Concept: Proposed NTP Evaluation on Fluoride Exposure and Potential for Developmental Neurobehavioral Effects.” Presentation by Dr. Kristina Thayer, NIEHS/DNTP. NTP Webinar (December 2, 2015). Conference Agenda.