Sekuyisikhathi eside ochwepheshe befuna izindlela zokuvimbela izidakamizwa
Emhlabeni wonke, i-cataracts yiyona imbangela ehamba phambili yobumpumputhe nokulahlekelwa kombono. E-United States, amaphesenti angaba ngu-50 kubo bonke abantu abaneminyaka engama-80 nangaphezulu abaye bahlinzwa ngokuhlinzwa, bebiza ama-dollar ayizigidi eziyizigidi ezingu-6,8 ngonyaka. Ukwelashwa kwe-Cataract yindlela ewukuphela yokuqinisekisa ukwelapha.
Ngenxa yezinsiza ezilinganiselwe, izakhamuzi zamazwe asathuthuka ngokuvamile azikwazi ukuhlinzeka ngokuhlinzeka kwe-cataract futhi kumele zihlupheke ngokuqhubekayo kwe-lens opacity okwenza kube nzima ukubona ngaphansi kwezimo ezivamile kodwa futhi kunzima kakhulu ukubona ebusuku noma uma i-glare iyinkinga.
Ngamanye amazwi, kunzima kakhulu (futhi kuyingozi) kubantu abanezinkinga zokushayela ebusuku.
Ngenxa yokutholakala okulinganiselwe kokuhlinzwa kwe-cataract emazweni amaningi kuwo wonke umhlaba, ochwepheshe endle bebelokhu befuna indlela yokuvimbela i-cataracts. Kulinganiselwa ukuthi ukutholakala kwesilinganiso sokuvimbela ukuthi ukubambezela kokuqala kwe-cataracts ngeminyaka engu-10 kungaholela ekunciphiseni amaphesenti angu-50 emithwalweni ebonakalayo nokuhlinzwa. Njengamanje, abacwaningi abaningi bamehlo bakholelwa ukuthi ukusetshenziswa kwama-antioxidants ngendlela ethile kungavimbela ukwelapha.
I-hypothesis evumelekile evamile ngokuphathelene nokuthuthukiswa kwezidakamizwa ezihlobene nobudala be-pears oxyidative kanye nokungalingani kwe-osmotic njengesizathu. Ngokuqondile, ukudlula ngokweqile kwama-radicals mahhala ukulimaza amaprotheni ama-lens kanye ne-lipids ku-epithelium ngaleyo ndlela igxilisa i-lens futhi iholele ku-opacity eqhubekayo. Ama-antioxidants afana ne-vitamin C ne-vitamin E azinzile la ma-radicals mahhala, ngaleyo ndlela aqede ukubhujiswa kwama-radicals.
Eqinisweni, siyazi ukuthi i-lens ikhetha ukubeka ezinye izinhlobo ze-antioxidants njenge-suchaslutein, i-zeaxanthin, i-vitamin E, ne-vitamin C.
Ngokuqinisekile, izici ngaphandle kokucindezeleka kwe-oxidative kanye nama-radicals mahhala nazo zidlala indima ekuthuthukiseni i-cataracts efaka:
- Ukukhanya kwe-UV
- ukusetshenziswa kotshwala
- isifo sikashukela
- i-hormone therapy
- ukubhema
- ukukhuluphala
Izinto ezinjalo zivame ukwandisa ukucindezeleka kwe-oxidative futhi zivimbele ikhono lakho lokuvikela umonakalo noma ukulungisa umonakalo wesikhumba.
Ukuvimbela I-Cataracts Nge-Diet Antioxidant-Rich
Imiphumela evela ocwaningweni lwesiSwidi eyanyatheliswa ku- JAMA Ophthalmology ngo-2014 ikhombisa ukuthi ukusabalala kwe-cataracts kuncishisiwe phakathi kwabantu abadla njalo ukudla okune-antioxidant-ecebile njengemifino eluhlaza, okusanhlamvu okuphelele kanye nekhofi. Kulesi sifundo esikhulu sabesifazane asebekhulile nabadala, izinkinga eziphazamisayo ezifana nokubhema, inkomba yomzimba womzimba, umsebenzi womzimba, kanye nezinga lemfundo lahlelwe, futhi imiphumela isabonakala ngokuphawulekayo.
Ngenxa yokuthi amazinga anyukile e-antioxidants ekudleni komuntu ahlotshaniswa nokwakheka okuncane kokubunjwa kwe-cataract, kuyamangalisa ukucabanga ukuthi izithako zokuvimbela i-antioxidant nazo zinganciphisa ingozi yezinkinga zaso. Kodwa-ke, ucwaninga ukuthi ama-antioxidant supplements asebenza yini ekuvimbeleni i-cataracts kuye kwaba nemiphumela engavumelani.
Esinye isilingo esilandelayo sokulawula okungahleliwe esashicilelwe ephepheni I- Ophthalmology ngo-2014 siphakamisa ukuthi ama-multivitamine anelungelo lokuxubana ngama-antioxidant anciphisa ingozi ye-nuclear cataract-uhlobo lwe-cataract-ngamaphesenti angu-9 phakathi nenkathi yeminyaka engu-11.2.
Esinye isifundo sikhombisa ukuthi kulabo abacwaningayo abavame ukudla ukudla okucebile ama-antioxidants, ukuxhaswa kwezinga eliphezulu lokuvimbela i-antioxidant kungase kwandise ingozi yokubunjwa kwe-cataract. Ukuthola lokhu okungahambi kahle kubangelwa ukucabanga ukuthi ngokweqile ngokweqile, ama-antioxidants angakwazi ukuguqula ama-pro-oxidants futhi abange ukucindezeleka kwe-oxidative.
Isizathu sokuthi ama-supplementary antioxidant noma ama-multivitamin amalungiselelo amancane akwenzi lutho ekuvimbeleni i-cataracts cishe ihlobene nokubunzima kwesimetabolism somuntu. Kuze kube manje, akukho inhlanganisela elinganiselwe neyakhekayo engakwazi ukukhiqiza umphakathi ocebile we-antioxidant okhona ekudleni okunempilo.
Ngaphezu kwalokho, cishe kunezinye izinhlobo eziningi ze-antioxidants esingazitholi, futhi lezi antioxidants engaziwa cishe zidlala indima enkulu ekuvikeleni izinkinga zokugula kanye nezinye izinhlobo zezifo.
Izwi elivela
Ukucwaninga kubonisa ukuthi ama-antioxidant supplements enza okuncane ukuvimbela umdlavuza nesifo senhliziyo. Kodwa-ke, ukudla okucebile ngemifino eluhlaza, izithelo ezimibalabala kanye neminye imithombo ye-antioxidants kuye kwahlobana nokunciphisa ingozi yomdlavuza nesifo senhliziyo. Ngokufanayo, kanti ukudla okunomsoco okunezidakamizwa kungasiza ekuvimbeleni ukwakheka kwe-cataract, izithako zamanje zokulwa ne-antioxidant cishe zingenzi lutho ukuvimbela lesi sifo. Ekugcineni, uma unethemba lokusebenzisa inzuzo ye-antioxidants, ukubheja kwakho okungcono kakhulu ukudla ama-antioxidants ngaphakathi kokuqukethwe kokudla okunomsoco futhi ugweme ukuthatha izithako zokuvimbela i-antioxidant okungenzeka ukuthi zingenzi lutho futhi zingalimaza.
Imithombo:
I-Mares J. Food Antioxidants Yokuvimbela I-Cancer. I-JAMA. 2015; 313 (10): 1048-9.
I-S, Lindblad BE, i-Morgenstern R, i-Wolk A. Ingqikithi ye-Antioxidant Yokudla kanye Nengozi Yokubhekana Ne-Cataract Ephathelene Nesikhathi Esihlobene Nabantu Abakwa-Population Based Based Chort of Women JAMA Ophthalmology. 2014; 132 (3): 247-52.