Izifundo zibonisa ukuthi ama-EDC aphazamisa ukusebenza okujwayelekile kwama-homoni ezocansi kubantu.
Ucwaningo olusha luthole amazinga aphezulu amakhemikhali aziwa ngokuthi ama-endocrine-disrupting chemicals (EDCs) emasampulini amanzi atholwe ezindaweni esifundazweni sase-Colorado lapho kusetshenziswa khona i-hydraulic fracturing (fracking) ukuze kukhishwe uwoyela negesi.
Izifundo zangaphambilini zibonise ukuthi ama-EDC aphazamisa umsebenzi ojwayelekile wama-hormone ezocansi kubantu. Axhunyaniswe nomdlavuza, ukungabi nenzalo nokuphazamiseka komsebenzi ojwayelekile wokuzala kubesilisa nabesifazane, ukukhubazeka kokuzalwa, ukuphazamiseka komsebenzi wohlelo lokuzivikela emzimbeni nowezinzwa, kanye nezinye izinkinga eziningana zempilo kubantu. Abacwaningi baye bathola ukuthi amasana esesiswini, izingane ezisanda kuzalwa nezingane ezincane ezichayeke ku-EDCs zibhekene nengozi ephakeme yezifo ezihlobene nokungasebenzi kahle kohlelo lwe-endocrine.
Ngokwalo cwaningo eshicilelwe muva nje yiphephabhuku i-Endocrinology, amazinga aphezulu e-EDCs atholwe emasampulini amanzi angaphezulu nangaphansi komhlaba aqoqwe e-Garfield County e-Colorado, indawo enkulu yokuthuthukiswa kukawoyela negesi enezimbobo ezingaphezu kuka-10,000 lapho kwenziwa khona i-fracking.
Abacwaningi baqoqa amasampuli amanzi ezindaweni ezinhlanu ze-fracking e-Garfield County lapho ukuchitheka kwamanzi okunezibulala-magciwane kwakwaziwa ukuthi kwenzeke eminyakeni eyisithupha edlule. Bahlola amasampuli ngezinhlobo ezahlukene zama-EDC futhi bathola ukuthi, “Ku-39 wamasampuli ahlukene amanzi, amaphesenti angu-89, 41 amaphesenti, 12 amaphesenti, no-46 amaphesenti abonise imisebenzi ye-estrogenic, i-anti-estrogenic, i-androgenic, ne-anti-androgenic, ngokulandelana.”
Ucwaningo luthole ukuthi amasampuli amanzi aqoqwe eMfuleni i-Colorado nawo ayenamazinga aphezulu kakhulu e-EDCs.
UMfula i-Colorado, njengoba uyisizinda esikhulu sokukhipha amanzi esifundeni, wamukela ukuchitheka kwamanzi amdaka e-fracking okwenzeka emigodini yemvelo yegesi esifundeni. Okubalulekile ukuthi, abacwaningi bathole ukuthi amanzi aqoqwe ezindaweni ezinomsebenzi omncane noma ongenawo nhlobo we-fracking e-Garfield County nase-Missouri ayenamazinga aphansi kakhulu e-EDCs. I-Los Angeles Times ibika ukuthi u-Susan Nagel, i-endocrinologist e-University of Missouri School of Medicine futhi ongumbhali ohola ucwaningo, uthe, “Njengoba i-fracking ikhula, imiphakathi ingase ibhekane nezingozi ezinkulu zempilo ngenxa yokwanda kokuchayeka kumakhemikhali aphazamisa ama-hormone.”
Lena akuyona iminyaka yokuqala abacwaningi bekhombisa ukukhathazeka ngamakhemikhali asetshenziswa ku-fracking aziwayo noma asolwa njengama-EDCs. Ngokusho kwe-Los Angeles Times, abacwaningi baye babona cishe amakhemikhali ayi-100 anjalo asetshenziswa ku-fracking.
