Chifukwa chiyani pali zotupa ndi khansa paziweto tsopano?

kafukufuku wa khansa

M’zaka zaposachedwapa, takumana ndi zotupa, khansa, ndi matenda ena owonjezereka a matenda a ziweto. Zotupa zambiri zowopsa za amphaka, agalu, hamster, ndi nkhumba zaku Guinea zimathabe kuchiritsidwa, pomwe khansa yowopsa ilibe chiyembekezo ndipo imatha kukulitsidwa moyenerera. Choyipa kwambiri ndichakuti makampani ena amagwiritsa ntchito chikondi ndi mwayi wa eni ziweto poyambitsa mankhwala otsatsira ndi achire, koma poyang'anitsitsa, zosakanizazo nthawi zambiri zimakhala zopatsa thanzi.

Zotupa ndi khansa si matenda atsopano, ndipo zotupa za m'mafupa zawonekeranso m'mafupa ambiri a nyama. Kwa zaka zoposa 2000, madokotala akhala akuyang'anitsitsa za khansa ya anthu, koma khansa idakali imfa yofala kwa amphaka, agalu, ndi anthu m'mayiko otukuka. Madokotala apita patsogolo kwambiri pa kafukufuku wa khansa ya anthu. Monga nyama zoyamwitsa, madokotala a zinyama agwiritsanso ntchito zambiri zomwe akudziwa pochiza ziweto. Tsoka ilo, akatswiri a zinyama ali ndi chidziwitso chochepa chokhudza khansa inayake mu nyama, ndipo kafukufuku wawo pa zotupa zowopsa ndizochepa kwambiri kuposa za anthu.

Komabe, gulu lachipatala lapezanso zina za khansa ya ziweto pambuyo pazakafukufuku. Kuchuluka kwa zotupa za khansa mu nyama zakutchire ndizochepa kwambiri, ndipo chiwerengero cha ziweto zapakhomo ndizokwera kwambiri; Ziweto zimakonda kukhala ndi khansa m'magawo omaliza a moyo, ndipo maselo awo amatha kusintha kukhala maselo a khansa; Tikudziwa kuti mapangidwe a khansa ndizovuta kwambiri, zomwe zingayambitsidwe ndi zinthu zosiyanasiyana monga majini, chilengedwe, zakudya, chisinthiko, komanso ngakhale kuyanjana kwa zinthu zosiyanasiyana zomwe zimapangidwira pang'onopang'ono. Titha kumvetsetsa zina mwazomwe zimayambitsa zotupa ndi khansa, kupangitsa kuti zikhale zosavuta kuti ziweto zichepetse mwayi wodwala momwe angathere.

Zoyambitsa zotupa

Ma genetic ndi magazi ndizomwe zimayambitsa khansa zambiri zotupa, ndipo ziwerengero za khansa ya nyama zimathandizira kubadwa kwa khansa ya chotupa. Mwachitsanzo, mu mitundu ya agalu, Golden Retrievers, Boxers, Bernese Bears, ndi Rottweilers nthawi zambiri amadwala khansa inayake kusiyana ndi agalu ena, kusonyeza kuti maonekedwe a majini amachititsa kuti nyamazi zikhale ndi chiopsezo chachikulu cha khansa. nyamazi zikhoza kuyambitsidwa ndi kusakanizikana kwa majini kapena kusintha kwa majini, ndipo chifukwa chenichenicho sichinadziwikebe.

Kuchokera ku kafukufuku wokhudza khansa yaumunthu, tikudziwa kuti khansa yambiri imagwirizana kwambiri ndi chilengedwe komanso zakudya. Zowopsa zomwezo ziyenera kugwiranso ntchito kwa ziweto, ndipo kukhala m'malo omwe eni ake amakhalanso ndi zoopsa zomwezo. Komabe, ziweto zina zimatha kuzolowera malo ovuta kuposa anthu. Mwachitsanzo, kutenthedwa kwa nthawi yaitali ndi cheza cha ultraviolet kungayambitse khansa yapakhungu mwa anthu. Komabe, amphaka ndi agalu ambiri amakhala ndi tsitsi lalitali, zomwe zimapangitsa kuti zisawonongeke. Komabe, mofananamo, amphaka ndi agalu opanda tsitsi awo opanda tsitsi kapena afupiafupi amatha kukhudzidwa kwambiri. Utsi wa fodya, kuipitsidwa kwa mpweya, ndi chifunga ndi chimodzi mwa zinthu zomwe zimayambitsa khansa ya m'mapapo ya anthu, zomwe zimagwiranso ntchito kwa ziweto monga amphaka ndi agalu. Zomwe mankhwala ena ophera tizirombo, herbicides, ndi heavy metal ndi zifukwa zomwe zingatheke. Komabe, chifukwa chakuti ziwetozo zili ndi poizoni kwambiri, kuziwona pafupipafupi kungayambitse kufa ndi poizoni musanapangitse zotupa za khansa.

Ziweto zonse zodziwika pakadali pano zili ndi squamous cell carcinoma, chomwe ndi chotupa chowopsa (khansa) chomwe chimapezeka pakhungu losaya. Pambuyo poyang'ana, kuyang'ana kwa nthawi yaitali ku dzuwa ndi cheza cha ultraviolet ndicho chifukwa chachikulu cha matendawa. Kuphatikiza apo, amphaka oyera, akavalo, agalu, ndi ena okhala ndi mikwingwirima yoyera amatha kudwala squamous cell carcinoma; Amphaka osuta alinso malo omwe ali pachiwopsezo chachikulu cha khansa, ndipo zatsimikiziridwa kuti ma carcinogens mu utsi wa ndudu amayambitsa squamous cell carcinoma mkamwa mwa mphaka.