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Fluorideinour say,possiblycausinghypothyroidismor
Hashimoto’sdisease.
Anotherpossibilityisthatfluoride
that’snotexcretedcouldbeabsorbed
water:toomuch bythebody’shardandsofttissues,such
asthebonesandotherorgans.People
withhighlevelsoffluorideintheirblood
fortoolong? aremorelikelytodevelopbone disease,
earlierstudieshavefound.
Intelligencereports
It’sbeentheeffectsoffluorideon
We’rebombardedwithfluoridedentalproducts—sowithnew intelligenceandlearningthatare
studiessuggesting health dangers, is it time to stop putting it in mosttroublingtomanyopponentsof
fluoridation,whopointto54studies
our tap water? showingthathighlevelscausea
reductioninIQinpeople,and60animal
studiesthatfoundfluorideimpairs
memoryandlearningabilities.
Butanewstudyhasdiscovered
somethingevenmoreworrying—
pregnantwomencanpassonfluorideto
thegrowingfetus,suggestingitcrosses
theplacenta.Womenwhodrankthe
mostfluoridatedwaterduringpregnancy
hadchildrenwho,bytheageoffour,had
lowerIQs. Therewasroughlyafour-
pointdropinIQscoreforevery1mgof
fluorideinaliterofthemother’surine. 2
ResearchersfromYorkUniversityin
Torontoanalyzeddatafrom512mothers
ddingfluoridetothewatersupply Fluorosisisontherisebecausemost andtheirchildren,141ofwhomlivedin
hasbeenhailedasoneofthetop toothpastesalreadycontainfluoride— anareawithfluoridatedwater,tracking
Atenmostimportantpublichealth aningredienttheylackedwhenwater theirlevelsoffluoridewhilepregnant
measuresofthetwentiethcentury—but fluoridationwasintroduced.These andtestingtheIQsoftheirchildrenwhen
hasthepractice,introducedinthe1940s days,onesmallstripoftoothpasteon theyreachedtheageofthreeorfour.
topreventtoothdecayinchildren,now atoothbrushhasbetween 0.75 and 1.5 Notsurprisingly,thewomenin
passeditssell-bydate? mgoffluoride. fluoridatedareashadmuchhigherlevels
Twonewstudiessuggestithas,with ofthemineralintheirurine—butthey
oneconcludingthere’snosuchthing Badprocessing alsohadmorechildrenwhoseIQscore
asasafedoseoffluoridetothegrowing Buteventhislowerlevelcouldstillbe wasbelowthe107averageforthegroup.
body,andanotherunderliningwhat toohigh,sayresearchersfromIcahn Forevery1mgoffluorideinthe
fluoride’sopponentshaveclaimedfor SchoolofMedicineatMountSinai mother’surine,boys’averagescorewas
years:thechemicalisaneurotoxinthat inNewYork—especiallyashealth 4.49pointslower,whereasgirlsdidn’t
affectsachild’sIQandabilitytolearn— officialshaven’tfactoredinthegrowing appeartobeaffectedbyfluoride.This
evenwhenit’sthemotherwhodrank immunesystem’sabilitytoexcrete differencehascausedcriticstodismiss
fluoridatedwaterwhilepregnant. fluoride.Anadultexcretesaround60 thestudyas‘badscience,’although
Advocatesoffluoridationhaveargued percentofthemineral,butforachild, onepossibilityisthatthesexesdevelop
thatthepoisonisinthedose.Atthe thisdropstojust45percent. differently,andanotheristhatthe
recommendedconcentrationof1part Childrenretainaround55percentof mother’sIQscorehasmoreinfluence
permillion(equivalentto1milligram thefluoridetheytakeinfromtapwater thanfluorideon their child’s intelligence.
perliterofwater),it’ssafe,theyargue. andtoothpasteintheirliverandkidneys.
Thisisdespitethefactthat,in2015,the Among1,742adolescentstheytracked, Notsobad
USDepartmentofHealthandHuman allhadhighfluoridelevels,eventhough TheCanadianstudymightindeed
Servicesreducedthatsafethresholdto mostlivedinareasthatfluoridated havebeenignoredandclassifiedas‘bad
0.7mg,becausedentistswerereporting publicwaterwellbelowthe0.7mgsafe science’wereitnotforthemanyother
ariseincasesofdentalfluorosis,a level,withsomeaslowas0.4mg. 1 studiesthathavealsocometothesame
discolorationoftooth enamel caused by Compromisedkidneyscouldreduce conclusion.Forexample,researchers
excessfluoride. thyroid gland function, the researchers from the Affiliated HospitalofGuizhou
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