John Myers
Kudya nyama zofiira nthawi zonse, ndipo izi zikuphatikizanso soseji wopangidwa kuchokera pamenepo, akhala akukayikira kuti akuwonjezera chiopsezo cha khansa.
Heme iron imawononga ma cell
Heme iron imakhala ndi mphamvu yoyambitsa zotupa m'thupi ndikuyambitsanso kutupa komwe kulipo mobwerezabwereza. Ngati thupi sililetsa njirazi, matenda aakulu, kuphatikizapo khansa, akhoza kuyamba.
Heme iron imayambitsa khansa ya m'matumbo
Chitsulo cha heme chili ndi chinthu china choopsa chifukwa chimalimbikitsa mapangidwe apadera a mapuloteni (N-nitroso compounds) m'matumbo. Izi zimapanga ma free radicals, omwe amawononga ma cell ndipo amakhudzanso DNA (chemical structure of genetic information) yomwe ili mkati mwa selo. Amalimbitsa kukula kwa zotupa ndipo amakhala ndi zotsatira za carcinogenic.
Nyama yofiira imawonjezera chiopsezo cha khansa ya m'mimba
Kafukufuku wa European Prospective Investigation into Cancer and Nutrition (EPIC) adafufuza mgwirizano pakati pa chitsulo cha heme kuchokera ku nyama yofiira ndi yokonzedwa komanso chiopsezo chowonjezeka cha khansa ya m'mimba. Kafukufuku wam'mbuyomu adawonetsa kale kuti nyama yofiira ndi yokonzedwa ikhoza kuwonjezera chiopsezo cha khansa ya m'mimba. Kufufuza kwina kunasonyeza kuti pali kugwirizana pakati pa kumwa chitsulo cha heme ndi chiopsezo cha khansa ya m'mimba.
Khansa ya impso ndi chikhodzodzo chifukwa chodya nyama
Kukonzekera kwina kwa nyama kungayambitsenso thanzi. Nyama zambiri zophikidwa monga ham, nyama yankhumba, salami, bratwurst, agalu otentha, ndi zina zotere zili ndi ma nitrates, nitrites, ndi zoteteza zina zomwe zimawonjezedwa kuti zithandizire kukhalitsa.
Komabe, ma nitrates ndi nitrites m'zakudya amaganiziridwa kuti ali ndi khansa, chifukwa amasinthidwa kukhala mankhwala a N-nitroso m'thupi.
Izi zinawonetsedwa, mwachitsanzo, mu kafukufuku wa Dellavalle et al. Asayansi adatsimikiza za chiopsezo chowonjezereka cha khansa ya impso chifukwa chodya nitrate ndi nitrite kuchokera ku nyama. Ma nitrosamine owopsa amathanso kupangidwa ndi mchere, kusuta, kapena kuwotcha.
Mu phunziro lawo, Ferrucci et al. sanapeze kuti nitrate ndi nitrite kuchokera ku nyama yokonzedwa ndi carcinogenic, komanso kuti zikuwoneka kuti pali mgwirizano pakati pa kudya nyama yofiira ndi chiopsezo chowonjezeka cha khansa ya chikhodzodzo.
Imfa yoyambirira kuchokera ku nyama yokonzedwa
Kafukufuku wina wochokera ku Zurich anasonyeza kuti kudya soseji imodzi yokha patsiku kumawonjezera chiopsezo cha matenda a mtima, khansa, ndi matenda ena kwambiri. Kafukufukuyu adatha kutsimikizira kuti kudya nyama yokonzedwa bwino kumawonjezera chiopsezo cha kufa msanga ndi matenda omwe atchulidwa.
Khansara ya Esophageal - chiopsezo chowonjezeka kuchokera ku nyama yofiira
Kafukufuku wakale waku Spain wokhudza anthu pafupifupi 480,000 adawunikira kugwirizana pakati pa nyama yofiira ndi zinthu zopangidwa kuchokera pamenepo komanso kukula kwa khansa yam'mimba. Asayansi apeza kuti nyama yofiira ndi nyama yokonzedwa bwino imawonjezera chiopsezo chokhala ndi khansa ya m'mero.
Kuphunzira kwa nthawi yayitali kwa khansa ya endometrial kuchokera ku nyama
Pafupifupi azimayi 60,000 adachita nawo kafukufuku wamkulu wanthawi yayitali (kuyambira 1987 mpaka 2008) womwe udayang'ana kwambiri kugwirizana pakati pa kudya nyama nthawi zonse komanso kukula kwa khansa ya uterine komanso momwe zimakhudzira thanzi labwino. Ophunzirawo adayenera kuyesedwa mwatsatanetsatane phunzirolo lisanayambe.
Pambuyo pake, adatumizidwa mafunso a kotala omwe adayenera kutchula mtundu ndi kuchuluka kwa nyama yomwe amadya (nkhuku, nyama yofiira, nsomba, nyama zophikidwa) ndikupereka zambiri zokhudza thanzi lawo.
Kuwunika kwa deta yonse kunawonetsa kuti chiopsezo chotenga khansa ya m'chiberekero chinawonjezeka mpaka 30 peresenti mwa omwe adatenga chitsulo cha heme kwambiri kudzera mu zakudya zawo.
Kuyerekeza kwachiwerengero cha mitundu ina ya nyama (mwachitsanzo nkhuku vs. ng'ombe) pomalizira pake kunasonyeza kuti kudya kwa chiwindi kumabweretsa chiopsezo chachikulu cha matenda chifukwa chiwindi chimakhala ndi chitsulo chochuluka kwambiri cha heme.
Kafukufukuyu adawonetsanso kuti, pazaka zonse za 21, kuchuluka kwa iron (heme iron) kumawonjezeranso kuchuluka kwa amayi omwe akudwala khansa ya pachibelekero. Kuonjezera apo, kusanthula kwa deta kunapangitsa kuti amayi omwe ali ndi mtengo wapatali wa BMI, pokhudzana ndi kuchuluka kwa kudya nyama, adakumana ndi chiopsezo chachikulu chokhala ndi khansa ya pachibelekero.
Nyama: chifukwa cha chiwindi chamafuta
Kudya nyama nthawi zonse sikumangotengedwa ngati chinthu chowopsa cha khansa, komanso kukula kwa chiwindi chamafuta. Kafukufuku wotchedwa Rotterdam adawonetsa mchaka cha 2017 kuti anthu omwe amadya nyama zambiri amakhala ndi chiwindi chamafuta kwambiri kuposa omwe amadya nyama yaying'ono. Chochititsa chidwi n'chakuti, kudya kwambiri kwa mapuloteni opangidwa ndi zomera sikunawonjezere chiopsezo cha chiwindi chamafuta konse. Mutha kuwerenga zambiri za kulumikizanaku apa: Chiwindi chamafuta obwera chifukwa cha nyama
Kutsiliza
Choncho pali mfundo zokhutiritsa zokwanira zochepetsera kudya nyama. Zoonadi, sizili choncho kuti chidutswa cha nyama yofiira mwa apo ndi apo kapena soseji yopangidwa kuchokera pamenepo imayambitsa khansa kapena chiwindi chamafuta m’thupi. Pano, komabe, ndi kuchuluka kwa kudya kwa nyama komwe kumawerengedwa, chifukwa zatsimikiziridwa kuti chiopsezo cha matenda (pokhudzana ndi khansara ndi chiwindi chamafuta) chimawonjezeka kwambiri ndi kuwonjezeka kwa nyama ndi soseji.
Ngati simukufunabe kukhala opanda nyama, muyenera kutsatira njira zina zolimbikitsira thanzi:
- Muzidya kwambiri zakudya zochokera ku zomera. Chepetsani kudya nyama pang'ono.
- Idyani saladi ndi masamba atsopano nthawi ndi nthawi kuti thupi lanu likhale ndi chitetezo chokwanira potengera zakudya ndi zinthu zofunika zomwe zili nazo.
- Kondani zinthu za organic kuti zopopera pa zinthu wamba zisakubweretsereni mavuto ambiri pathupi lanu.
- Zakudya zanu ziyenera kukhala ndi fiber zambiri koma zosungunuka mosavuta. Chifukwa chake, perekani m'malo mwa mbewu zomwe zimagayidwa mosavuta monga mpunga wofiirira, mapira, kapena oats.
- Konzekerani zakudya zanu mosamala kuti zakudya zomwe mumadya kuti zisungidwe bwino komanso kuti zinthu zambiri zofunika kwambiri zikhale zopindulitsa ku thanzi lanu.
- Gwiritsani ntchito antioxidant wabwino ngati chowonjezera chazakudya. Mwanjira imeneyi, mutha kuthandizira bwino thupi lanu polimbana ndi ma radicals owopsa komanso a carcinogenic.
