Mar 09, 2014 fluoridated water have significantly lower iq scores than those who live in low fluoride areas. Fluoride action network harvard study finds fluoride lowers iq. Toute entreprise humaine, futelle industrielle, est. Fluoride may cause neurotoxicity in laboratory animals, including effects on learning and memory. This article was downloaded from harvard universitys dash repository, and is made. A comparative study of fluoride content in commercially available fluoridated toothpastes in sri lanka conference paper pdf available july 2014 with 182 reads how we measure reads. Story ataglance a harvard metaanalysis funded by the national institutes of health nih has concluded that water fluoridation significantly lowers iq scores in children, and may be a neurotoxicant that affects brain development more than 23 human studies and 100 animal studies have linked fluoride to brain. In summary, the study established that water fluoridation significantly reduces iq in children and that fluoride may be a neurotoxin that affects brain development. It states that previous studies supporting the lowered iq hypothesis have likely been subject to methodological errors, or confounding. There have been over 23 human studies and 100 animal.
In groundwater, natural fluoride concentrations range from trace quantities to over 25 mg l. Purchase fluoride research 1985, volume 27 1st edition. In a metaanalysis, researchers from harvard school of public health hsph and china medical university in shenyang for the first time. Flawed study overstates link between fluoride and ill. They found borderline low ft 3 levels among all children exposed to fluoridated water 51. Numerous other government reports have shown fluorides adverse impacts on intelligence.
Fluoride released into the ground water in china in some cases greatly exceeded levels that are typical in the u. Mar 10, 2015 the decision to add fluoride to a water supply is made by local or state governments. To the surprise of many fluoridation advocates, the study has found that fluoride intake has 1 little relationship to cavity prevention, 2 a significant relationship to dental fluorosis, particularly when ingested during infancy, and 3 a potentially far more significant relationship to bone health than the authors have thus far acknowledged. The major sources of ingested fluoride are water and other dietary sources including tea, food and drinks prepared with fluoridated water, fluoride tablets and drops and other supplements more relevant in the usa and elsewhere than in the uk, and unintentional ingestion of fluoridated toothpaste especially by children or fluoride mouthrinses. Plus, new documents obtained from under the freedom of information act. In a metaanalysis, researchers from harvard school of public health hsph and china medical. Harvard study confirms fluoride harms brain development iaomt. Subjects were drawn from control fluoride concentration in drinking water 0. A recent study of the effects of inorganic fluoride compounds on human cellular functions revealed that fluoride can interact with a wide range of enzymemediated cellular processes and genes modulated by fluoride including those related to the stress response, metabolic enzymes, the cell cycle, cellcell communications, and signal transduction. Dec 25, 2017 by washingtons blog government and top university studies. The effects of fluoride in the drinking water, ifau working paper. A 2012 harvard study reported a link between high fluoride levels found in naturally occurring water in china and lower iqs. Weve been convinced by the dental associations, who profit on the production and dissemination of fluoride, that the neurotoxin needs to be a part of all our dental visits and ingested through our natural.
Prospective study in new zealand, seeks to clarify the fluorideintelligence issue. Antifluoride groups often cite this finding out of context. Fluoride action network harvard study finds fluoride. What are the possible health effects of fluoridation. Further, 15 percent of children in the highfluoride city had signs of mental retardation, compared with only 6 percent in the lowfluoride city. Nov 17, 2015 dr brittany seymour, assistant professor in oral health policy and epidemiology at harvard school of dental medicine, debunks unreliable claims about water fluoridation in this new video, providing muchneeded information and context to the often misrepresented harvard study on fluoridation and childrens iq. Fluoride exposure in utero linked to lower iq in kids, study. The first studies about positive effects were conducted in 1945 with systemic fluoridation of drinking water in four american cities grand rapids. The anti fluoride crowd commonly claims that harvard university supports their position and to prove this they reference a study involving some academics at harvard. Aug 01, 2015 further, 15 percent of children in the high fluoride city had signs of mental retardation, compared with only 6 percent in the low fluoride city. Flawed study overstates link between fluoride and ill health. Yiamouyiannis cites 15 references in his pamphlet, lifesavers guide to fluoridation, that document immunosuppressive effects of as little as 10% of the amount of fluoride used in fluoridated.
Impact of fluoride on neurological development in children. Jul 28, 2012 good thing they put fluoride in the water supply all over the united states of america, including here in boulder where i live. We had concerns about the methods used, or the reporting of the results, in 97 percent of the studies, the authors noted. Inscription on memorial to the sixty dead of the 1930 meuse valley disaster it is not just a mistake for public health agencies to cooperate and collaborate with industries investigating and. The study found a drop in scores on intelligence tests for every 0. States, fluoride concentrations in water are much higher than normal, mostly from natural sources. Jan 12, 2016 a 2014 study in the american journal of public health, community water fluoridation and intelligence. A team of researchers found a statistically significant association between fluoride exposure in women during pregnancy and a lowering of iq in their children, reports the fluoride action network. The average loss in iq was reported as a standardized weighted. Study after study dating back to the 80s from respected academic and scientific institutions that connect fluoride to health dangers. In a study published july 20 online in environmental health perspectives, a us national institute of environmental health sciences journal, the researchers found, amongst other things that the children in high fluoride areas.
We already know how dangerous fluoride is and how it isnt needed at all. Harvard study shows fluoride reduces childrens intelligence. The early studies didnt take into account the subsequent widespread use of fluoride containing toothpastes and other dental fluoride supplements, which also prevent cavities. To achieve some control for maternal age the analysis was limited to the 30 towns that initiated fluoridation. Children seem to be more susceptible to the effects of ingesting fluoride. A call for reducing fluoride levels in drinking water news. Pdf epidemiological studies over 70 y ago provided the basis for the use of fluoride in caries prevention. Harvard study confirms fluoride reduces childrens iq.
Anti fluoride groups often cite this finding out of context. After concluding his 21city study 25, 26, he found that drinking water with 1 ppm of fluoride can prevent dental caries, increase tooth strength and does not have a negative impact on enamel. Our study summarized the findings of 27 studies on intelligence tests in fluoride exposed children. The findings of the iowa fluoride study have helped to clarify our understanding of the relationship between total fluoride intake, bones, and teeth. The results of the first ever us government funded study of fluoride and iq have just been published. National research council nrc 2006 concluded that adverse effects of high fluoride concentrations in drinking water may be of concern and. The study measured the maternal urinary fluoride levels in 512 women. Objectives after completing this article, readers should be able to. Extremely high levels of fluoride are known to cause neurotoxicity in adults, and negative impacts on memory and learning have been reported in rodent studies, but little is known about the substances impact on childrens neurodevelopment.
Harvard study finds fluoride lowers iq liberty blitzkrieg. In a 32page report that can be downloaded free of charge from environmental health perspectives, the researchers said. Varner et al 1998 undertook a second study to determine the relative contribution of fluoride to the high mortality found in the 0. Good thing they put fluoride in the water supply all over the united states of america, including here in boulder where i live. Fluoride inhibits the movement of white blood cells by 70%, thereby decreasing their ability to reach their target. The antifluoride crowd commonly claims that harvard university supports their position and to prove this they reference a study involving some academics at harvard. Association of downs syndrome and water fluoride level. This program announcement, research on fluorides to improve oral health, is related to several priority areas. And the study even accounted for other potential variables, such as lead exposure, iodine deficiency or a history of brain disease or head injury. In a metaanalysis, researchers from harvard school of public health hsph and china medical university in shenyang for the first time combined 27 studies and found strong indications that fluoride may adversely affect cognitive.
A child drinking two liters of water at 1 ppm fluoride 2 mg of fluoride per day would get more fluoride than some of the chinese children drinking one liter of water at 1. A call for reducing fluoride levels in drinking water. The nas recommended that the allowable limit for fluoride in tap water be lowered immediately. University to probe professors research on water, bone cancer in boys msnbc and the associated press boston harvard university said it is investigating whether a dentistry professor who edits a newsletter funded by a toothpaste maker played down research showing an increa. According to data reported to the centers for disease control and prevention, communities in massachusetts generally add fluoride to arrive at a concentration of 1. Aug 30, 2012 a child drinking two liters of water at 1 ppm fluoride 2 mg of fluoride per day would get more fluoride than some of the chinese children drinking one liter of water at 1. What are the possible health effects of fluoridation, and. They suggest fluoride can be linked to brain, blood and bone deficiencies in humans. The study click for abstract was published online in environmental health perspectiveson july 20, 2012.
Feb 26, 2014 in a 2005 study, it was found that 47% of children living in a new delhi neighbourhood with average water fluoride level of 4. Story ataglance a harvard metaanalysis funded by the national institutes of health nih has concluded that water fluoridation significantly lowers iq scores in children, and may be a neurotoxicant that affects brain development more than 23 human studies and 100. The decision to add fluoride to a water supply is made by local or state governments. The remaining study suggested a positive association between water fluoride level and downs syndrome incidence increased incidence with increased water fluoride concentration when only the crude incidence rates were compared. Nov 25, 20 antifluoride groups often cite this finding out of context. Mar 25, 2016 after concluding his 21city study 25, 26, he found that drinking water with 1 ppm of fluoride can prevent dental caries, increase tooth strength and does not have a negative impact on enamel. Do you take any of these 11 dangerous cholesteroldrugs. The documents that sparked national headlines and a yearlong investigation into scientific misconduct by the harvard dental professor who led nihs ongoing study of fluoride and bone cancer. Multiple epidemiological studies of developmental fluoride. But youre stuck with whatever your community puts in the water, and its very difficult to filter out of your water once its added. Impact of fluoride on neurological development in children news. The study looked at the effect of fluoride on the hippocampal region of rat brain, and concluded that. Fluoride occurs naturally in soil, water, plants and animals in trace quantities.
National research council nrc 2006 concluded that adverse effects of high fluoride concentrations in drinking. It was a group of studies from china and iran, where water fluoridation isnt even practiced. Public health service found that rates of osteosarcoma were significantly higher among males under 20 who lived in communities with fluoridated water than in. Iq studies carried out by the team from harvard university choi et al.
Pdf a comparative study of fluoride content in commercially. Describe the importance of fluoride in terms of dental decay. On average, children with higher fluoride exposure showed poorer performance on iq tests. When fluoride is ingested by humans and other animals some is taken up by body tissues, with longterm deposition in teeth and bones. Indexes and back issues indexes cumulative subject and author indexes are available for 1968 to 2002 and annual indexes for 2003 to201 7. Malik, harvard school of public health, for the helpful. A study provided by the lancet showed that fluoride is a neurotoxin which causes developmental toxicity. Sep 19, 2017 the study found a drop in scores on intelligence tests for every 0. Environmental health perspectives is a publication of the united states national institutes of healthsnational institute of environmental health sciences harvards announcement continues. Healthy people 2010 the public health service phs is committed to achieving the health promotion and disease prevention objectives of healthy people 2010, a phsled national activity for setting priority areas. Because it can occur at toxic levels, fluoride is one of the drinking water contaminants regulated by the u. Inscription on memorial to the sixty dead of the 1930 meuse valley disaster it is not just a mistake for public health agencies to cooperate and collaborate with industries investigating and deciding whether public.
At least when it comes to topical application, you have a choice. Fluoride may go through the bloodbrain barrier and accumulate in rat hippocampus, and inhibit the activity of cholinesterase. Weve been convinced by the dental associations, who profit on the production and dissemination of fluoride, that the neurotoxin needs to be a part of all our dental visits and ingested through our natural water resources. Responses to fluoride study flood in from all over the globe. In a metaanalysis, researchers from harvard school of public health hsph and china medical university in shenyang for the first time combined 27 studies and found strong indications that fluoride.
Followup fluoride study published december 19, 2014 as a followup, philippe grandjean, adjunct professor of environmental health at harvard school of public health hsph, anna choi, research scientist in the department of environmental health, and colleagues have published a pilot study of cognitive functions in chinese children. In a metaanalysis, researchers from harvard school of public health hsph and china medical university in shenyang for the first time combined 27 studies and found strong indications that fluoride may adversely affect. Fluoride lowers iq and causes other health problems the harvard school for public health reports. Dr brittany seymour, assistant professor in oral health policy and epidemiology at harvard school of dental medicine, debunks unreliable claims about water fluoridation in this new video, providing muchneeded information and context to the often misrepresented harvard study on fluoridation and childrens iq critics of water fluoridation have successfully used the. The study was published in environmental health perspectives by scientists. To the surprise of many fluoridation advocates, the study has found that fluoride intake has 1 little relationship to cavity prevention, 2 a significant relationship to dental fluorosis. Pdf on jan 1, 2014, paul connett and others published the fluoride debate. In 1986, epa established a maximum allowable concentration for fluoride in drinking water of 4. You can easily buy fluoride free toothpaste and mouthwash.
Harvard study finds fluoride lowers iq published in. For example 50% of ingested fluoride is deposited in the bones of children as opposed to 10% in adults. In a study published july 20 online in environmental health perspectives, a us national institute of environmental health sciences journal, the researchers found, amongst other things that. Findings from our metaanalyses of 27 studies published over 22 years suggest an inverse association between high fluoride exposure and childrens intelligence.
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