Cibiyar Nazarin Magungunan Baka ta Duniya & Toxicology (IAOMT) tana faɗakar da jama'a cewa takardar sammaci ta tilasta wa shirin National Toxicology Program (NTP) fitar da wani tsari mai tsawo da ya wuce. nazarin neurotoxicity na fluoride. Ciki Saƙonnin imel na CDC sun bayyana mataimakiyar Sakataren Lafiya Rachel Levine ta toshe binciken kuma an ɓoye daga jama'a tun daga watan Mayu 2022. Wannan sabon rahoton ya tabbatar da ƙarfafa sakamakon binciken da aka samu daga zane-zane guda biyu na farko da aka fitar a cikin 2019 da 2020. Masu bitar takwarorinsu na waje duk sun yarda tare da ƙaddamar da cewa bayyanar cututtukan fluoride na haihuwa da farkon rayuwa na iya rage IQ.
NTP ta ba da rahoton 52 na 55 binciken da aka samu raguwa a cikin IQ yaro tare da ƙara yawan fluoride.
"Binciken mu na meta yana tabbatar da sakamakon binciken meta-bincike na baya kuma yana fadada su ta hanyar haɗa sababbi, ingantaccen bincike…Bayanan suna goyan bayan wata ƙungiya mai juzu'i tsakanin bayyanar fluoride da IQ na yara."
Meta-bincike na NTP yana sanya cutarwa cikin hangen nesa:
"Binciken [R] akan sauran masu cutar neurotoxic ya nuna cewa sauye-sauye masu sauƙi a cikin IQ a matakin yawan jama'a na iya yin tasiri mai zurfi… raguwar maki 5 a cikin IQ na yawan jama'a zai kusan ninka adadin mutanen da aka keɓe a matsayin nakasassu na hankali."
Bayanin da wani ma'aikacin gwamnati da ba a bayyana sunansa ba ya yi iƙirarin cewa binciken takardun bai shafi ruwa ba:
"Bayanan ba su goyi bayan tabbacin sakamako a ƙasa da 1.5 MG / L ... duk bayanan ƙarshe a cikin wannan takarda ya kamata a bayyana a sarari cewa duk wani binciken da aka haɗa daga binciken da aka haɗa kawai ya shafi adadin fluoride na ruwa sama da 1.5 mg / L."
NTP ta mayar da martani:
"Ba mu yarda da wannan sharhi ba… kimammu yayi la'akari da bayyanar fluoride daga kowane tushe, ba kawai ruwa ba… saboda ana samun fluoride a wasu abinci, samfuran hakori, wasu magunguna, da sauran hanyoyin… matakan… suna ba da shawarar bambance-bambancen jimillar filaye daga ruwa hade da fluoride daga wasu tushe.
NTP kuma ya ce:
"Ba mu da wata hujja da za mu bayyana cewa bincikenmu bai shafi wasu yara ko masu ciki a Amurka ba."
"Da yawa daga cikin mafi kyawun karatun da ke nuna ƙananan IQs a cikin yara an yi su a cikin mafi kyawun fluoridated (0.7 mg / L) ... yawancin ma'auni na fluoride na fitsari sun wuce waɗanda za a sa ran daga shan ruwa wanda ya ƙunshi fluoride a 1.5 mg / L."
Da aka tambaye shi ko meta-bincike ya gano duk wani amintaccen kashi na fluoride, NTP ya amsa cewa ba su sami “babu kofa a bayyane” don jimlar bayyanar fluoride ko bayyanar fluoride na ruwa. NTP ta buga jadawali na rahotonsu yana nuna raguwar IQ mai kusan maki 7 akan kewayon fluoride daga 0.2 zuwa 1.5 mg/L. A yanzu akwai babban jigon shaidar kimiyya da ke goyan bayan yanke shawarar cewa fluoride na iya rage IQ na yaro, gami da matakan fallasa daga ruwa mai tari.
Wani ɗan bita-bita ya yi sharhi game da girman tasirin: “…wannan yana da mahimmanci…Wannan babban abu ne.”
Dokta Jack Kall, DMD, FAGD, MIAOMT, ɗan'uwa ne na Kwalejin Janar Dentistry kuma tsohon shugaban sashen Kentucky. Shi Babban Jagora ne na Kwalejin Kasa da Kasa na Magungunan Oral da Toxicology (IAOMT) kuma tun 1996 ya zama Shugaban Hukumar Gudanarwa. Hakanan yana aiki a Hukumar Kula da Lafiya ta Bioregulatory Medical Institute (BRMI). Shi memba ne na Cibiyar Nazarin Magungunan Ayyuka da Cibiyar Nazarin Lafiya ta Baka ta Amirka.