Cov kws tshaj lij tau teev npe 12 yam tshuaj uas yuav txo tau IQ ntau ntxiv hauv cov menyuam yaus, ua rau muaj kev cuam tshuam tsis zoo hyperactivity tsis meej, thiab ua rau kev vwm tsis meej pem thaum lub sijhawm menyuam loj hlob. Cov tshuaj yeeb dej caw no tsis pom nyob hauv ib puag ncig, tab sis kuj muaj nyob hauv tsev neeg cov khoom siv xws li rooj tog thiab khaub ncaws. Cov kws tshawb fawb tshwj xeeb yog txhawj xeeb txog qhov tseeb tias cov menyuam yaus thoob ntiaj teb raug tshuaj lom, cov kev phom sij uas tsis tau lees paub los ntawm lub xeev.
Cov menyuam yaus muaj qhov tshwm sim ntau zuj zus vim muaj kev cuam tshuam txog lub hlwb tsis ua haujlwm, thiab kev puas hlwb ntawm kev loj hlob neurobehavioral tau tshwm sim hauv 10-15% ntawm cov menyuam mos. Subclinical txo lub hlwb kev ua yog txawm ntau. Ntxiv mus, cov caj ces ua rau muaj kev cuam tshuam tsuas yog hauv 30-40% ntawm cov neeg mob.
Philip Grandjin (Tsev Kawm Qib Siab Harvard Bellinger) thiab Philip Landrigan (Mount Sinai Lub Tsev Kawm Ntawv Tshuaj, Manhattan) nyiam cov ntsiab lus no hauv lawv cov kev tshawb fawb. Lawv tawm tswv yim hais tias ib puag ncig cov xwm txheej muaj feem cuam tshuam hauv causation, qee qhov teeb meem ua ke nrog cov caj ces. Thiab lawv hais txog cov pov thawj tias cov tshuaj siv dav siv los ntawm ntau qhov kev lag luam tau ua lub luag haujlwm "ua kom ntsiag to" ntawm kev puas hlwb ntawm lub hlwb.
Lawv suav nrog cov tshuaj neurotoxin txaus ntshai tshaj plaws:
- methylmercury,
- polychlorinated biphenyls (PCBs),
- ethanol,
- coj,
- arsenic,
- toluene, cov
- txiv ntseej,
- fluorite,
- chlorpyrifos,
- tetrachlorethylene,
- polybrominated diphenyl ethers (PBDE),
- Dichlorodiphenyltrichloroethane hmoov.
Tau kawg, nws tsis pub leejtwg tias muaj ntau yam tshuaj lom neeg rau ntawm cov npe no yog lom. Lo lus nug yog ntau npaum li cas peb ntsib lawv thiab seb peb tswj nws. Thiab qhov tshwm sim ntawm cov neeg sib tiv tauj no yog qhov deb ntawm ib txwm kawm thiab kwv yees tau. Piv txwv li, ua tau muaj nyob hauv roj av, tshuaj pleev xim rau xim thiab txawm tias menyuam yaus cov khoom ua si rau ntau xyoo ua ntej cov kws tshawb fawb pom nws cov kev tsis zoo rau tib neeg.
Tshuaj fluorine siv tau ntawm cov koob tshuaj qis: nws yuav pab tiv thaiv kom hniav lwj thiab ntxiv dag zog rau cov pob txha. Txawm li cas los xij, hauv cov koob tshuaj ntau, nws ua rau kev kho hniav thiab pob txha thiab muaj qhov tsis zoo cuam tshuam rau kev loj hlob ntawm lub paj hlwb. Tab sis, qhov tseeb, qhov no tsis yog hais txog tshuaj txhuam hniav.
Ntawm kev txhawj xeeb zoo hluav taws kub retardants Nws yog ib pawg ntawm cov tshuaj hu ua PBDEs. Cov tshuaj no tau pib siv es tsis txhob txwv PCBs. Los ntawm lub sijhawm lawv tau pom tias ua rau mob qog noj ntshav thiab ua rau lub cev tsis muaj zog, kev ua me nyuam, lub paj hlwb thiab endocrine, lawv tau siv ntau pua cov khoom, xws li cov yas thiab roj hmab. Cov neeg tsim khoom tau hloov mus rau PBDEs. Txawm li cas los xij, nws twb tau ua pov thawj tias PBDEs, siv los tua hluav taws-retard rooj tog, txo IQ thiab qeeb kev loj hlob ntawm lub hlwb.
Qhov tseeb, tsis muaj ib tus niam txiv twg tuaj yeem tiv thaiv lawv cov menyuam los ntawm cov co toxins. Thiab lawv tsis tawm nrog hws thiab nyob hauv lub cev ntev. Kwv yees li ib lub hlis ntawm cov metabolism yog tsom xyuas thiab ua kom lub luag haujlwm ntawm lub hlwb. Los ua cov ntaub ntawv tseem ceeb txawm, ntau plhom lab ntawm cov pa tshuaj txuas ntxiv tas li ntawm neurons. Cov txheej txheem yog qhov nyuaj ua rau lub hlwb siv 10 zaug ntau calories ntawm ib phaus dua li tag nrho lwm yam hauv lub cev.
Feem ntau ntawm lub hlwb thiab nws cov 86 billion tus neurons tau tsim thaum thawj ob peb lub hlis ntawm ib tus menyuam nyob hauv plab, nyob hauv niam plab. Rau lub paj hlwb kom tsim kho tau kom zoo, cov neurons yuav tsum tau ua kab kom muaj raws nraim li qhov kev cuam tshuam ntawm cov tshuaj hormones thiab cov neurotransmitters, tab sis cov neurotoxins tuaj yeem rhuav tshem cov hlwb. Hauv cov theem thaum ntxov ntawm lub neej, txawm tias muaj kev cuam tshuam sab nraud me me tuaj yeem ua rau muaj kev puas tsuaj rau lub hlwb, uas yuav tsis muaj kev rau txim rau cov laus.
Yuav ua li cas? Cov kws tshaj lij, suav nrog Philip Grandjin tau hais los saum no, pom zoo kom noj cov khoom lag luam organic, uas yog, cog / tsim nrog tsawg lossis tsis muaj tshuaj tua kab, tshwj xeeb tshaj yog rau cov poj niam cev xeeb tub. Nyeem ntxiv txog cov co toxins hauv ib tsab xov xwm ntawm Lub Atlantic.