I-BPA, noma i-bisphenol-A, yikhemikhali etholakala kwamanye ama-plastiki nama-respo epoxy. Uma ubheka inombolo ye-recycle 7, uzokwazi ukuthi iplastiki oyisebenzisayo iqukethe i-BPA. I-BPA ingatholakala nakwezinye izibopho zamazinyo, ama-linings yokudla okusemathinini, amabhodlela wezingane, namadivayisi wezokwelapha.
Abezindaba bavame ukubika ngokukhathazeka nge-BPA, futhi ungathola amabhodlela amanzi angenawo ama-BPA (ngokuvamile ngamanani aphezulu) ezitolo eziningi zezemidlalo.
Ingabe lezi zimpahla ezingenayo i-BPA ziwufanele? Ingabe i-BPA iyingozi empilweni yakho?
Nakhu okushiwo i- UpToDate , irekhodi lobuchwepheshe labodokotela neziguli, okumele lisho nge-BPA:
"Ukukhathazeka ngemiphumela yezempilo kuvela ezifundweni zezilwane ezibonisa ukuthi i-BPA iyasebenza njenge-estrogen ebuthakathaka emzimbeni futhi ingaba nomthelela ohlelweni lwezinto eziphilayo ezilinganisweni eziphansi. Isibonelo, izifundo zezilwane zibike ukuthi amazinga aphansi okuvezwa kwe-BPA ngesikhathi sokuthuthukiswa angabangela ushintsho ukuziphatha, ubuchopho, i-prostate gland, i-mammary gland, kanye neminyaka lapho izilwane ezinsikazi zithola ukuvuthwa.
Ucwaningo lwe-epidemiological luye lwaphakamisa imiphumela yempilo yomuntu, kuhlanganise nesifo sikashukela, isifo senhliziyo, isifo sebindi, kanye nemingcele yemvelo engavamile.
I-Estrogen ne-BPA
I-BPA iphazamisa i-endocrine eyaziwa. Abaphazamisi be-Endocrine ngamakhemikhali anomthelela kuma-hormone emizimbeni yethu, ngokuphazamisa indlela abasebenza ngayo emzimbeni noma ngokulingisa ama-hormone emzimbeni.
I-BPA i-estrogen, i-hormone ebalulekile yokuzala. Ngenkathi i-estrogen ivame ukucatshangwa njengehomoni yesifazane, i-hormone ibalulekile kokubili amadoda nabesifazane.
I-BPA yenza njenge-estrogen ebuthakathaka emzimbeni, futhi okungenani ezifundweni zesilwane, itholakale ibe nomthelela ngisho namazinga aphansi. Ucwaningo luye lwathola ukuthi lapho izilwane zivezwa ku-BPA ngezinyathelo ezibalulekile zokuthuthukisa, ingozi yempikiswano emibi ingaphezulu.
Lokhu kufaka hlangana nesigaba sokubeletha nesitja samantwana.
BPA kubantu
Asazi ngempela ukuthi izifundo zesilwane zibonisa ukuthi abantu bazosabela kanjani kumazinga e-BPA. Kodwa-ke, kungcono ukuba uqaphe uma kungenzeka, kanti iNational Institute of Environmental Health Sciences (NIEHS) isikisela ukuthi ukugwema ukuvezwa kwe-BPA uma ukhulelwe noma ukondla.
Kodwa kuthiwani ngokuvezwa kwe-BPA omdala? Kungaba yini ukuholela ezinkingeni ngokuzala? I-NIEHS ibika ukuthi ngokucwaninga kwamanje, kukhona ukukhathazeka okunganaki kwe-BPA eyonakalisa ukuzala kubantu abadala abanempilo, abangasebenzi nemikhiqizo ye-BPA endaweni yokusebenza. (Kulabo abasebenza ngokuqondile ngezinto zokwakha ze-BPA, bayalinganisa ingozi njengento encane.)
Ezinye izifundo ezincane zithole ukuxhumana okukhona phakathi kwe-BPA nokuzala. Kwesinye isifundo, amadoda anamazinga atholakalayo e-BPA emcimbini wawo ayephindwe kathathu ukuba abe nokuhlushwa kwesisu nomzimba wesibindi, izikhathi ezingaphezu kwesine kungenzeka ukuthi zibe nezibalo ezincane zesisu, futhi kabili amathuba okuba nomzimba we-sperm motility (kahle kangakanani isidoda sibheke). Lolu cwaningo lwalugxile kakhulu emadodeni abasebenza ne-BPA emafektheri, ngakho-ke akucaci ukuthi lokhu kuzoba njani kumadoda angasebenzi ne-BPA esimweni somsebenzi.
Esicwaningweni esincane esibheka abesifazane abahamba nge- IVF , abacwaningi bathola ukuthi amazinga e-BPA aphezulu, amazinga e-estradiol aphansi kakhulu. Baphinde bathola ukuthi amaqanda ambalwa atholakala kwabesifazane ababenamazinga aphezulu e-BPA.
Ngenxa yokuthi lezi zifundo ziye zaba ngosayizi encane, noma kunjalo, akucaci ukuthi umthelela omkhulu we-BPA ungase ube nawo kanjani ekuzaleni nasekuphileni komuntu.
Ukugwema i-BPA
Ucwaningo oluthile luye lwabona ukuthi abantu abangu-90% banamazinga atholakalayo e-BPA emcinini wabo. Njengoba kucatshangwa ukuthi abantu abangamaphesenti angama-90 ababheki nokuhlukumezeka, ubufakazi abubonakali ukubonisa ukuxhumana okuqondile phakathi kwe-BPA nokungabi nabantwana .
Kodwa-ke, ngenxa yokuthi ezinye izifundo zokuqala zithole umthelela kumazinga okuzala, kungcono kakhulu ukugwema ama-BPA uma kungenzeka.
Ezinye izindlela unganciphisa ukuchayeka kwakho:
Nciphisa inani lokudla okusemathinini oyisebenzisayo. Esikhundleni salokho, zama ukuthenga ukudla okuza ku-ingilazi yezimbiza (noma ukudla okusha noma okuqandisiwe.)
Gwema ukupheka ukudla kwakho ezitsheni zepulasitiki, njengoba ungase ukwenze uma i-microwaving. Sebenzisa ingilazi esikhundleni.
Gwema iziqukathi zokudla epulasitiki, amabhodlela amanzi, nezinye amabhodlela epulasitiki anenombolo yesi-7 ephindayo. Lokhu kungenzeka ukuthi kuqukethe i-BPA. Ungasebenzisi kabusha amabhodlela amanzi ahloswe ukuba alahleke.
Khuluma nodokotela wamazinyo wakho mayelana nokugcwaliswa kwe-BPA-free.
Imithombo:
I-Goldman, i-Rose. Izingozi zomsebenzi nezemvelo zokukhiqiza abesifazane. UpToDate.com.
I-Mok-Lin E, i-Ehrlich S, i-Williams PL, i-Petrozza J, i-Wright DL, i-Calafat AM, i-X, i-Hauser R. Urinary i-bisphenol A ukuphendula nokuphendula kwama-ovari emkhatsini wesifazane ophethe i-IVF. I-International Journal of Andrology. 2010 Ngo-Apr; 33 (2): 385-93. Epub 2009 Nov 30.