Lesi yisizathu esenza izingane zibe iziphukuphuku

Izinga eliphezulu lobuwula bezingane linesizathu esihle, ngaphandle kwalokho ukuntuleka komsebenzi wezimoto Esizukulwaneni esisha, kunezincazelo eziningi eziye zangena ekudleni kwethu futhi zahlala ezingqondweni zezingane zethu ukuphakamisa izinga lobuwula bezingane kabili noma ngaphezulu.

Kusukela ngeminyaka yawo-XNUMX, i-fluoride iye yengezwa emanzini kampompi kwamanye amazwe anezimboni ukuze kuvikelwe ekuboleni kwamazinyo.

Kwatholakala ukuthi amazinga okugxilisa kakhulu ale nto adala umonakalo omkhulu ebuchosheni, kuyilapho amazinga okugxilisa ingqondo atholakala emanzini kampompi ngokuvamile awayona ingozi.

"Sibonile ukuthi kunokungabaza okukhulu ngengozi ye-fluoride, ikakhulukazi kwabesifazane abakhulelwe nezingane ezincane," uKristen Till wase-York University eCanada, umbhali oholayo walolu cwaningo olushicilelwe kumagazini i-JAMA Pediatrics, etshela abe-AFP.

Izindlela zokwandisa ubuhlakani

Ngokusho kwabacwaningi, amanzi ane-fluoridated asatshalaliswa cishe ku-66% wabantu base-United States, 38% wabantu baseCanada, kanye no-3% wabantu base-Europe.

Lolu cwaningo luhlole imibhangqwana elinganiselwa ku-601 kamama nengane emadolobheni ayisithupha aseCanada, u-41% wayo ohlala ezindaweni ezihlinzekwa ngamanzi ane-fluoridated evela kuziphathimandla zikamasipala.

Abacwaningi baphawula ukuthi ukwanda ngakunye kokuhlushwa kwe-fluorine emcinini wabesifazane abakhulelwe nge-milligram eyodwa ilitha kwakuhlotshaniswa nokwehla kwe-IQ ngamaphuzu angu-4,5 kubafana abaphakathi kweminyaka emithathu nemine ubudala, kodwa hhayi emantombazaneni.

Ngokucabangela inani le-fluorine umama ayedla nsuku zonke kunesamba somchamo, abacwaningi baphawula ukuthi ukwanda ngakunye kwe-milligram eyodwa kwakuhlotshaniswa nokuncipha kwamaphuzu angu-3,7 ku-IQ kokubili abafana namantombazane.

Kodwa-ke, ochwepheshe abaningi emikhakheni eyahlukene kusukela kuzibalo kanye ne-toxicology kuya ku-neuroscience, baye balugxeka ucwaningo.

"Ngicabanga ukuthi iziphetho zincane futhi zilinganiselwe," kusho uStuart Ritchie, isazi sokusebenza kwengqondo eKing's College London. Kungase kubaluleke ocwaningweni olubanzi ngalolu daba, kodwa lulodwa alukwazi ukuqhubekisela phambili impikiswano ngobungozi be-fluorine. "

Ngokulindele le ngxabano, iGamma Pediatrics ikhiphe isitatimende esingajwayelekile lapho ithi ukushicilela lolu cwaningo akusona isinqumo “esilula”.

Ukufaka isandla ekwehleni kwamazinga okubola kwamazinyo e-United States, ukwengeza i-fluorine emanzini kungenye yempumelelo enkulu yezempilo yomphakathi eyi-XNUMX ekhulwini lama-XNUMX, ngokusho kweCenters for Disease Control and Prevention (CDC).