Letsatsi, le haufi haholo le le hole haholo, le boloka botsitso ba bophelo lefatšeng. Letsatsi le fana ka mofuthu oa polanete ea rona, mocheso le matla a hlokahalang bakeng sa ho etsa lifoto. E tsamaisa melaetsa ea rona ea bosiu ebile e khothalletsa maikutlo a ho ba hantle.
Khanya ea letsatsi e boetse e hlokahala bakeng sa vithamine D e hlahang letlalong - ke ka lebaka leo vithamine D ka linako tse ling e bitsoang vithamine ea letsatsi.
Hape hoa etsahala hore limilione tsa Maamerika li ka 'na tsa se ke tsa fumana vithamine D. E ka boela ea fumana vithamine D ho tsoa lijong tsa hau, empa tse fokolang tsa lijo tse tloaelehileng haholo lijong tsa Bophirimela li na le mehloli e mengata ea vithamine D.
Likotsi tsa UV Exposure
Likotsi tse hlahisoang ke li-ultraviolet (UV) li 'nile tsa hlokomeloa' me tsa tšohloa ka lilemo. Mahlaseli a kotsi a bakoa ke basal cell carcinoma , squamous cell carcinoma le melanoma e kotsi. Kotsi ea kankere ea letlalo e eketseha ha batho ba itšunya-tšunya letsatsing, kapa ka boomo ba iponahatsa ka mahlaseli a maiketsetso a mahlaseli a kotsi a kang maqheku a ho qhibiliha. Le bakeng sa ba amehileng ka liphello tsa litlolo, letsatsi ke mohloli oa se tsejoang e le photoaging - ho tsofala pele ho nako ea letlalo ka lebaka la ho hlahella ha UV. Liphello tsa photoaging li hlaha ho letlalo le koahetsoeng ka marameng, le mahlaseli a mangata ho ea pele, ho hōla ha sekhahla, kapa likinatise keratoses.
Kankere ea Letlalo la Melanoma
Le hoja kankere ea letlalo e se nang melanoma e tloaelehile, hangata ha e bolaee. Ka lehlakoreng le leng, kankere ea melanoma e hlahisa karolo e ka tlaase ho 5 lekholong ea kankere ea letlalo empa e baka lefu la kankere ka ho fetisisa. Ke kankere ea bobeli e tloaelehileng ka ho fetisisa ho basali ba lilemong tsa bo-20 le ea boraro e tloaelehileng ka ho fetisisa ea kankere ea banna ba lilemong tsa bo-20. Kotsi e phahameng ea kankere ea melanoma e fumanoe bakeng sa batho ba nang le histori ea ho hlahisa letsatsi letsatsing.
Setlolo se sireletsang letsatsi se sireletsa ho chesa ha letsatsi, 'me sekolo se sireletsang letsatsi se tsoela pele ho khothaletsoa ke American Academy of Dermatology. Tšireletso khahlanong le ho chesa haholo ke ntho e ntle, 'me ho bonahala ho emela hore sena se ka boela sa fetolela tšireletso e itseng ha ho tluoa tabeng ea malignancy. Seo se boletse hore sefate sa letsatsing ke karolo e le 'ngoe feela ea setšoantšo ka ho sireletsa letsatsing. Hape ha ho na liphuputso tse bontšitsoeng hore ho sebelisa letsatsi, ho le mong, ho thibela melanomas kapa basal cell carcinomas, ho latela sehlooho se hlahileng ka March 20011 koranteng ea "Pediatrics." Nako e sebelisoang letsatsi le botlalo le tsona ke lintlha tse ka sehloohong.
Na Vithamine ea Letsatsi e Thibela Kankere?
Ho na le mabaka a ho ba le tšepo, empa ho na le lipotso tse ngata tse setseng li sa arajoe. Ho ea ka lipatlisiso tsa laboratori, ho haelloa ke vithamine D ho bonahala eka ho thusa mekhoa e itseng ea bokooa hore e be teng, empa litsebi li re lipatlisiso tse ling li hlokahala pele ho kenyelletsoa vithamine D tlatsetso bakeng sa thibelo ea kankere.
"Low Cloud Cover" Thuto le Leukemia
Liphuputso tsa liphoofolo le tsa laboratori li tšehetsa khopolo ea hore ho ba le litekanyo tse lekaneng tsa vithamine D ho ka thusa ho thibela lefu la kankere, empa ha ho bopaki bo joalo bo teng ho batho. Leha ho le joalo, sehlopha sa bo-rasaense se ile sa ipotsa hore na se ka bona bopaki ba tšireletso ea letsatsi (le lihlopha tse phahameng tsa vithamine D) tse thehiloeng ho lichaba tse sa tšoaneng.
Ba ile ba etsa tlhahiso ea hore batho ba lulang linaheng tse ling ba le hōle le equator, ba nang le mahlaseli a tlaase a UVB, ba atisang ho ba le li-vithamine D tse fokolang, ba ka 'na ba bontša kotsi e kholo ea kankere e itseng, ho akarelletsa le kankere ea mali .
Ho fapana le lithuto tsa khale, sehlopha sena se fetohile bakeng sa sekoahelo sa leru linaheng tse fapa-fapaneng 'me se ama tsela eo batho ba phelang ka tlaase ho eona ba hlahisang UVB. Ba entse liphetoho tsena ho sebelisa lisebelisoa tsa satellite ho tloha NASA.
Phuputsong ena, ho fetola sekoahelo sa maru, litekanyetso tsa kankere e ne e le tse phahameng ka ho fetisisa linaheng tse batlang li le haufi le lipalo tse kang Australia, New Zealand, Chile, Ireland, Canada le United States.
Li ne li le tlaase linaheng tse haufi le equator, tse kang Bolivia, Samoa, Madagascar le Nigeria.
Thuto ea mofuta ona e ke ke ea netefatsa hore ho haella ha vithamine D ho lebisa ho kankere ea mali, empa e bontša mokhatlo o ka fetisetsoang le ho hlahlojoa ke bo-rasaense.
Vithamine D le Kalafo ea Leukemia
Tabeng ea lik'hemik'hale tsa mali tse nang le kankere ea mali le lymphoma, bopaki bo tšehetsa khopolo ea hore vithamine D e hlile e thusa ho thusa mafu a mang a kankere.
Liphuputso li bontšitse khokahanyo pakeng tsa ho haelloa ke vithamine D le ho hlaseloa hampe mefuteng e fapa-fapaneng ea kankere ea mali, ho kopanyelletsa le lefu le sa foleng la lymphocytic leukemia (CLL) , 'me e fokotsa khōlō B cell lymphoma (DLBCL), e leng mofuta o tloaelehileng haholo oa se-lymphoma e seng Hodgkin .
Empa lithuto tsena li shebile morao, ka hona ho ka ba thata ho bolella sesosa ka ts'ebetso. Na vitamin D e ka sebelisoa ho eketsa matla a litlhare tse ling tsa kankere? Ena e ntse e le potso e bulehileng, empa data e khothatsa.
Karolo ea setso sa vithamine D bakeng sa masapo a matla e boetse e sebetsa. Bongata ba phekolo ea kankere - 'me hangata kankere ka boeona-ba na le tšekamelo ea ho fokotsa bone ea masapo, ho eketsa kotsi ea lefu la masapo. Ho boloka khalsiamo le vithamine D e lekaneng ho ka boela ha e-ba bohlokoa ho latela bophelo ba bone.
Lisebelisoa:
> The American Academy of Dermatology. Setlolo sa letsatsi se sireletsehile se lula se sireletsehile, se atlehang sa tšireletso ea letsatsi.
Balk SJ. Motsoako oa li-ultraviolet: Kotsi ho Bana le Bacha. Lingaka . 2011; 127 (3): 588-97.
> Cuomo LE, Leah Leah, Leah Leah ED, Mohr SB. Bohlasoa bo phahameng ba lekhabiso la mahlaseli a mahlaseli a fokolang ba motlakase bo amahanngoa le Phaello e phahameng ea Leukemia: Thuto ea linaha tse 172. PLoS ONE . 2015; 10 (12): e0144308.
> Tsamaiso ea National Aeronautics le Space Administration. International Satellite Cloud Climatology Project Database. http://isccp.giss.nasa.gov/products/browsed2.html.
> Wu X, Groves FD, McLaughlin CC, Jemal A, Martin J, Chen VS. Ho ba le Kelello ea Lik'hemik'hale Ho Etsahala Mefuta e Meng ea Bacha le Bacha Baholo United States. Cancer Causes Control. 2005; 16 (3): 309-320.