Ilanga, elikufuphi elikude kwaye lide lide, lisekela ubungakanani obunzima bomhlaba emhlabeni. Ilanga linika ukufudumala kweplanethi, ukushisa kunye namandla adingekayo kwi-photosynthesis. Iqhuba imizuzu yethu yobusuku kwaye ikhuthaza iimvakalelo zokuphila kakuhle.
Ukukhanya kwelanga kubalulekile ekuveliseni i-vitamin D elukhumbeni-yoko kutheni i-vitamin D ibizwa ngokuba yi-vitamin.
Kwaye kwenzeka nje ukuba izigidi zabantu baseMelika zingenako ukufumana i-vitamin D. ngokwaneleyo, kodwa uninzi lwezinto ezidliwayo ngokuqhelekileyo ekudleni kweNtshona ziqhelekileyo kwimithombo ye-vitamin D.
Izingozi ze-UV Exposure
Izingozi ezivela kwi-ultraviolet (UV) zikhutshwe kwaye zixutyushwa iminyaka. Ukukhanya kwe-UV kubangelwa i- basal cell carcinoma , i- squamous cell carcinoma , kunye ne-melanoma embi. Umngcipheko weekliniki zesikhumba ukwanda xa abantu bexhomekeke kwilanga, okanye bazivelele ngokuzithandela kwimithombo yombane ye-UV njengemibhede yokuqhawula. Kwaye kulabo abachaphazelekayo ngemiphumo yokucoca, ilanga ngumthombo wento eyaziwa ngokuba yi-photoaging - ukuguga kwangaphambili kwesikhumba ngenxa yokungabikho kwe-UV. Iimpembelelo ze-photoaging ulwahlula kwi-wrinkled, i-skin colored to precancerous, scaly-crusty growths, okanye i-actinic keratoses.
I-Melanoma Skin Cancer
Nangona i-non-melanoma yesikhumba seengqumbo ziqhelekile, azifane zibulawe. Ngokwahlukileyo, i-melanoma imela ngaphantsi kwe-5 ekhulwini yazo zonke i-cancer cancer kodwa ibangela ukufa komdlavuza wesikhumba. Ingomdla wesibini oqhelekileyo wesetyhini kwi-20s yabo yesithathu kunye nesithathu yesifo somdlavuza oqhelekileyo wamadoda kuma-20s. Umngcipheko ophakamileyo we-melanoma sele ufunyenwe ngabo banomdla wokunyuka kwelanga lokunyuka kwelanga.
I-sunscreen ikhusela ukushona kwelanga, kwaye i-sunscreen iyaqhubeka icetyiswa yi-American Academy of Dermatology. Ukukhuselwa ekutshatyalaliswa kolukhulu into enhle, kwaye kubonakala ukuba kumelele ukuba oku kuya kuguqulwa kolunye ukhuseleko xa kufike ekuhlaleni. Oko kwathiwa, i-sunscreen iyinxalenye enye yomfanekiso wonke xa kuziwa ekukhuselweni ilanga. Kwaye akukho zifundo eziye zabonisa ukuba ukusetyenziswa kwesikrini se-sunscreen, yedwa, kuthintela i-melanomas okanye i-basal cell carcinomas, ngokubhekiselele kwinqaku epapashwe ngo-Matshi 20011 kwiphephancwadi, "I-Pediatrics." Ubungakanani bexesha elichithwa elangeni kunye nebala lakho lizinto eziphambili.
Ngaba iVithamini Yelanga Ikhusela I-Cancer?
Kukho isizathu sokuba nethemba, kodwa kukho nemibuzo emininzi engaphenduliyo. Ngokwezifundo zebhubhorathri, ukungabikho kwe- vitamin D kubonakala kukunceda iindawo ezimbi zokuhlakulela, kodwa iingcali zithi uphando oluthe lufunekayo ngaphambi kokuba i- vitamin D isongezelelo sokunciphisa umhlaza inganconywa.
I-"Low Cloud Cover" Isifundo kunye neLukemia
Izifundo zezilwanyana kunye nelabhoratri zixhasa ingcamango yokuba ukufumana amavithamini D okwaneleyo kunokukunceda ukukhusela i-leukemia, kodwa akukho bungqina obukhoyo kubantu. Nangona kunjalo, iqela lezinzululwazi lazibuza ukuba ingaba libona ubungqina bokhuselo lokukhanya kwelanga (kunye namazinga aphezulu e-vitamin D) esekelwe kwimihlaba yeentlanga ezahlukeneyo.
Baye bacetyisa ukuba abantu abahlala kumazwe bahamba kude ne-equator, kunye ne-UVB ephantsi, ukuvakala ukuba namazinga angaphantsi kwe-vitamin D, kunokubonisa umngcipheko ophezulu weengcingo ezithile, kuquka ne- leukemia .
Ngokungafani nezifundo ezidlulileyo, eli qela lihlengahlengele iifenethi zefu emazweni ahlukahlukeneyo kwaye zichaphazela ukuvezwa kwe-UVB yabantu abahlala ngaphantsi. Baye benza izilungiso ngokusebenzisa idatha ye-satellite evela kwi-NASA.
Kulo pho nonongo, ukulungiswa kwendwangu yefu, amazinga e-leukemia aphezulu kakhulu kumazwe afutshane nezibonda, njenge-Australia, iNew Zealand, iChile, i-Ireland, i-Canada kunye ne-United States.
Babephantsi kakhulu kumazwe asondele kwi-equator, njengeBolivia, iSamoa, iMadagascar neNigeria.
Olu hlobo lwesifundo alukwazi ukubonakalisa ukusilela kwe-vitamin D lukhokelela kwi-leukemia, kodwa lubonisa ukuba unxulumano olungasasazwa kwaye luhlalutye lulwazi.
I-Vitamin D kunye neNyemia Treatment
Kwimeko yeengcingo zegazi ezifana ne-leukemia kunye ne-lymphoma, ubungqina buxhasa ingcamango yokuba i-vitamin D ibonakala ngathi inceda imithi ethile yomhlaza isenza umsebenzi wayo.
Izifundo zibonise unxibelelwano phakathi kobunzima be-vitamin D kunye nesifo esibi ngakumbi kwiindidi ezahlukahlukeneyo zomhlaza wegazi, kubandakanya i-lymphocytic leukemia (CLL) engapheliyo , kunye nokwanda kwe-B cell lymphoma (DLBCL), uhlobo oluqhelekileyo lwe- non-Hodgkin lymphoma .
Kodwa ezi zifundo zikhangele ngasemva, ngoko kuya kunzima ukuxelela isizathu ukususela kwimpumelelo. Ngaba i-vitamin D ingasetyenziselwa ukwandisa amandla emithi ethile yomhlaza? Oku kuqhubeka umbuzo ovulekile, kodwa idatha iyakhuthaza.
Indima yendabuko ye-vitamin D yamathambo aqinile nayo iyafaneleka. Uninzi lwezonyango zomhlaza - kwaye ngokuqhelekileyo i-cancer ye-themselves-ithambekele ekunciphiseni ubukhulu besifo samathambo, okwandisa umngcipheko we-osteoporosis. Ngoko ukugcina amanqanaba alaneleko e-calcium kunye ne-vitamin D kunokubaluleka ngokubhekiselele kwimpatho yezempilo.
Imithombo:
> I-American Academy yeDermatology. I-Sunscreen ihlala ikhuselekile, ifomu elifanelekileyo lokukhuselwa kwelanga.
Balk SJ. I-ultraviolet Radiation: Ingozi kubantwana nakwi-Adolescents. Pediatrics . 2011; 127 (3): 588-97.
> Cuomo RE, Garland CF, Gorham ED, Mohr SB. I-Cover Low-Adjusted Ultraviolet B Irradiance Inxulumene neNkcazo ePhakamileyo yexabiso le-leukemia: Ukufunda kwamazwe angama-172. PLoS ONE . 2015; 10 (12): e0144308.
> I-Aeronautics kunye noLawulo lweZithuba. I-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. Iingxaki Zomdlavuza Kwimizekelo Phakathi Kwabantwana Abaselula kunye nabaselula abaseUnited States. Iingxaki Zomdlavuza. 2005; 16 (3): 309-320.