In a 32page report that can be downloaded free of charge from environmental health perspectives, the researchers said. 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. Further, 15 percent of children in the highfluoride city had signs of mental retardation, compared with only 6 percent in the lowfluoride city. 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. 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. The effects of fluoride in the drinking water, ifau working paper. 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.
A call for reducing fluoride levels in drinking water. 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. Harvard study confirms fluoride harms brain development iaomt. National research council nrc 2006 concluded that adverse effects of high fluoride concentrations in drinking. The antifluoride crowd commonly claims that harvard university supports their position and to prove this they reference a study involving some academics at harvard. But youre stuck with whatever your community puts in the water, and its very difficult to filter out of your water once its added.
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. Malik, harvard school of public health, for the helpful. 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. Pdf a comparative study of fluoride content in commercially. National research council nrc 2006 concluded that adverse effects of high fluoride concentrations in drinking water may be of concern and. A 2012 harvard study reported a link between high fluoride levels found in naturally occurring water in china and lower iqs. Flawed study overstates link between fluoride and ill health. 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 results of the first ever us government funded study of fluoride and iq have just been published. Fluoride occurs naturally in soil, water, plants and animals in trace quantities. It was a group of studies from china and iran, where water fluoridation isnt even practiced.
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. The study was published in environmental health perspectives by scientists. The study found a drop in scores on intelligence tests for every 0. 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. Fluoride inhibits the movement of white blood cells by 70%, thereby decreasing their ability to reach their target. 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. 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. Responses to fluoride study flood in from all over the globe. Pdf epidemiological studies over 70 y ago provided the basis for the use of fluoride in caries prevention. In a metaanalysis, researchers from harvard school of public health hsph and china medical university in shenyang for the first time. 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.
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. Pdf on jan 1, 2014, paul connett and others published the fluoride debate. What are the possible health effects of fluoridation. At least when it comes to topical application, you have a choice.
The decision to add fluoride to a water supply is made by local or state governments. And the study even accounted for other potential variables, such as lead exposure, iodine deficiency or a history of brain disease or head injury. Subjects were drawn from control fluoride concentration in drinking water 0. Jan 12, 2016 a 2014 study in the american journal of public health, community water fluoridation and intelligence. Nov 25, 20 antifluoride groups often cite this finding out of context.
The nas recommended that the allowable limit for fluoride in tap water be lowered immediately. The study click for abstract was published online in environmental health perspectiveson july 20, 2012. Dec 25, 2017 by washingtons blog government and top university studies. Children seem to be more susceptible to the effects of ingesting fluoride.
Describe the importance of fluoride in terms of dental decay. This program announcement, research on fluorides to improve oral health, is related to several priority areas. The first studies about positive effects were conducted in 1945 with systemic fluoridation of drinking water in four american cities grand rapids. To achieve some control for maternal age the analysis was limited to the 30 towns that initiated fluoridation. What are the possible health effects of fluoridation, and. Impact of fluoride on neurological development in children. Fluoride action network harvard study finds fluoride lowers iq. Mar 10, 2015 the decision to add fluoride to a water supply is made by local or state governments. Bassins study comes on the heels of a national academy of sciences nas report that found the federal safe limit for fluoride in tap water did not protect children from dental fluorosis or increased bone fractures. Findings from our metaanalyses of 27 studies published over 22 years suggest an inverse association between high fluoride exposure and childrens intelligence. It states that previous studies supporting the lowered iq hypothesis have likely been subject to methodological errors, or confounding. You can easily buy fluoride free toothpaste and mouthwash. 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. Fluoride may cause neurotoxicity in laboratory animals, including effects on learning and memory.
Public health service found that rates of osteosarcoma were significantly higher among males under 20 who lived in communities with fluoridated water than in. 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 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. Fluoride exposure in utero linked to lower iq in kids, study. Association of downs syndrome and water fluoride level. Because it can occur at toxic levels, fluoride is one of the drinking water contaminants regulated by the u. Harvard study shows fluoride reduces childrens intelligence. Antifluoride groups often cite this finding out of context.
On average, children with higher fluoride exposure showed poorer performance on iq tests. They suggest fluoride can be linked to brain, blood and bone deficiencies in humans. There have been over 23 human studies and 100 animal. 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. 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. We already know how dangerous fluoride is and how it isnt needed at all. 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. Purchase fluoride research 1985, volume 27 1st edition. 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.
The early studies didnt take into account the subsequent widespread use of fluoride containing toothpastes and other dental fluoride supplements, which also prevent cavities. Multiple epidemiological studies of developmental fluoride. 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. Plus, new documents obtained from under the freedom of information act. 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. Anti fluoride groups often cite this finding out of context. 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. For example 50% of ingested fluoride is deposited in the bones of children as opposed to 10% in adults. 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. A study provided by the lancet showed that fluoride is a neurotoxin which causes developmental toxicity. 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. Mar 09, 2014 fluoridated water have significantly lower iq scores than those who live in low fluoride areas.
Fluoride may go through the bloodbrain barrier and accumulate in rat hippocampus, and inhibit the activity of cholinesterase. Sep 19, 2017 the study found a drop in scores on intelligence tests for every 0. Study after study dating back to the 80s from respected academic and scientific institutions that connect fluoride to health dangers. They found borderline low ft 3 levels among all children exposed to fluoridated water 51. The study measured the maternal urinary fluoride levels in 512 women. Harvard study finds fluoride lowers iq liberty blitzkrieg. Toute entreprise humaine, futelle industrielle, est. Scientific studies documenting the dangers of fluoridation. When fluoride is ingested by humans and other animals some is taken up by body tissues, with longterm deposition in teeth and bones. Iq studies carried out by the team from harvard university choi et al. In summary, the study established that water fluoridation significantly reduces iq in children and that fluoride may be a neurotoxin that affects brain development.
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. In 1986, epa established a maximum allowable concentration for fluoride in drinking water of 4. Harvard study confirms fluoride reduces childrens iq. Flawed study overstates link between fluoride and ill.
Our study summarized the findings of 27 studies on intelligence tests in fluoride exposed children. The study looked at the effect of fluoride on the hippocampal region of rat brain, and concluded that. 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. The findings of the iowa fluoride study have helped to clarify our understanding of the relationship between total fluoride intake, bones, and teeth. 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. 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. Fluoride action network harvard study finds fluoride.
Fluoride lowers iq and causes other health problems the harvard school for public health reports. Fluoride released into the ground water in china in some cases greatly exceeded levels that are typical in the u. 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. This article was downloaded from harvard universitys dash repository, and is made. Good thing they put fluoride in the water supply all over the united states of america, including here in boulder where i live. It is apparent that fluorides have the ability to interfere with the functions of the brain and the body by direct and indirect means. 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. Varner et al 1998 undertook a second study to determine the relative contribution of fluoride to the high mortality found in the 0. Do you take any of these 11 dangerous cholesteroldrugs. Indexes and back issues indexes cumulative subject and author indexes are available for 1968 to 2002 and annual indexes for 2003 to201 7. Objectives after completing this article, readers should be able to. Impact of fluoride on neurological development in children news.
A call for reducing fluoride levels in drinking water news. In groundwater, natural fluoride concentrations range from trace quantities to over 25 mg l. The average loss in iq was reported as a standardized weighted. Numerous other government reports have shown fluorides adverse impacts on intelligence. In a metaanalysis, researchers from harvard school of public health hsph and china medical. Harvard study finds fluoride lowers iq published in. We had concerns about the methods used, or the reporting of the results, in 97 percent of the studies, the authors noted. Environmental health perspectives is a publication of the united states national institutes of healthsnational institute of environmental health sciences harvards announcement continues. 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.
582 770 414 1301 1475 35 275 1371 889 435 944 585 468 1120 1037 60 38 1105 542 1243 893 584 653 174 918 1378 536 204 71 1175 1275