Kungabonakala kungaqhelekanga ukugxininisa ukubaluleka kwe-vitamin D ukuba ihlobo, kodwa abaninzi bethu baya kuqhubeka befuna ukuxhaswa naphezu kobuninzi bokushona kwelanga. Ukuba amazinga akho aphantsi, enye yeveki okanye iiveki ephumeni elwandle kusetyenziswe ukuba angenayo ngokwaneleyo ukuzalisa le vithamini ukuya kwanele. Kwaye, ukuba usebenza ngaphakathi okanye unxibe i- sunscreen yonqulo xa uphuma ngaphandle (kwaye kukulungele ukuba uyenzayo), kufuneka uncedise nge-vitamin D.
Ukongezelela kwimiphumo emihle kwimpilo yethambo kunye ne-calcium absorption, i-vitamin D inikezela ngokukhusela umdlavuza. Ezinye zezinto ezifunyanwe ngokutsha komhlaba kwisayensi yesondlo kwiminyaka yamuva zibubungqina bokuba u-vitamin D uyakwazi ukukhusela umdlavuza. Amaphepha angaphantsi kwe-800 ashicilelwe kubudlelwane phakathi kovithamini D kunye neekresela. Ngoku sinokubakho ubungqina obuninzi bokuthi ukugcina amanqanaba e-vitamin D aneleyo isicwangciso esiluncedo sokukhusela umdlavuza. Uphando lucebisa ukuba i-vitamin D ngokwaneleyo iyanciphisa umngcipheko wokufa emlonyeni webele, umbala we-colorectal, umphunga kunye ne-prostate, i-leukemia kunye ne-lymphomas kunye nayo yonke i-cancer. Uhlalutyo lwango-2014 kwi-vitamin D yokuxhaswa lufumene ukuba ludibaniswe nomngcipheko omncinci wokufa komhlaza.
Ubungqina bokuba i-Vitamin D's Ikhono lokunciphisa ingozi yomhlaza
Ingcamango yokuba i-vitamin D inokukhusela ngokumelene neekhensi ezivela kwimibono yokuba ukufa komdlavuza wekoloni kwakuphezulu kwiindawo ezinokukhanya kwelanga.
Uphando oluninzi lufumene ubudlelwane obuphambene phakathi kokukhanya kwelanga kunye neentlobo ezahlukeneyo ezingama-24 zomhlaza, kubandakanya ezinye zezibilini eziqhelekileyo, i-colon, i-rectum, ne-prostate. Ngenxa yokuba umthombo we-vitamine D oyintloko oyintsimi yelanga, kwaye isikhumba esimnyama singasebenzi kakuhle ekuveliseni i-vitamin ekuphenduleni i-UV ray, ukungabi namandla kwe-vitamin D kubangelwa esinye sezizathu zokusasazeka komhlaza phakathi kwama-Afrika aseMelika namaMerika aseMhlophe.
Ubungqina obubonisa ukuba ukubandakanya kwe-vitamin D'inciphisa ingozi yomhlaza kuye kwanda. Inkxaso eyongezelelweyo yokubaluleka kwe-vitamin D'ekukhuselweni komhlaza yanikezelwa ngamalingo alawulwa ngokungapheliyo okuvelisa i-vitamin D eyabonakalisa umngcipheko weengcipheko zomhlaza xa kuthelekiswa ne-placebo. Kwakhona kukho iingxelo ezininzi zokuthi utshintsho lwezityalo ze-vitamin D, eziphazamisa izenzo eziqhelekileyo ze-vitamin D, zidibene nomngcipheko womhlaza.
Izifundo ezongezelelweyo ziqinisekisile ukuba i-vitamin D inokuvimba ukukhula kweeseli zomhlaza ngeendlela eziliqela: I-Vitamin D iguqula ukubonakaliswa kwezakhi zofuzo ezilawula ukuvuvukala, ukufa kweeselula kunye nokwanda kweeseli, kunye nokuphazamisa izenzo zokukhuthaza ukukhula kwe-IGF-1 kunye nezinye izinto zokukhula. Kwakhona kwandisa ukulungiswa kwe-DNA kunye nokuzivikela komzimba, kunye ne-angiogenesis inhibition.
I-Vitamin D kunye nokuguga okunempilo
Ukongezelela ukukhusela umhlaza, ukuqinisekisa ukuba amanqanaba e-vitamin D anele anokunceda ukunciphisa umngcipheko wobuthathaka kwaye uwa. Amaphupha angabaphazamisa abantu abadala, eyona nto ibangele i-fractures, ukulimala kwentloko, kunye nokufa ngengozi kubantu abadala. Emva kokuwa, kuqhelekile ukuba umntu osekhulile ahlawule ngokukhawuleza ekusebenzeni ngokomzimba kunye nokulahleka kokuzimela.
Phantse ama-25 ekhulwini aseMelika asebekhulile awa phantsi kweenyanga ezintandathu, kwaye ngaphezulu kwama-50 ekhulwini ahanjiswa kwikhaya labahlengikazi.
Ukulahlekelwa kobunzima be-muscle kunye nokusilela kwe-vitamin D yimiba emibini yemingcipheko yokuwa, kwaye ezi zinto zixhunyiwe. Elinye lezakhiwo ezincinci ezibizwa ngokuba yi-vitamin D'ingumphumo walo oncedo kumsebenzi we-muscle, ngokutshintsha i-gene expression and calcium zothutho kwiiseli ze-muscle. I-vithamini D ephantsi idibene nokunciphisa amandla omzimba kubantu asebekhulile, kunye ne-vitamin D yongezwa ukuphucula amandla omzimba kunye nokulinganisela.
Ukuchonga inani elifanelekileyo leVithamini D
Amanqanaba aphantsi kwe-vitamin D afunyenwe aqheleke kakhulu eUnited States naseKhanada.
Ukutya okumbalwa kakhulu kuqulethe i-vitamin D kwaye ukufikelela kumazinga afanelekileyo nge-sun kunokuba nzima, kuxhomekeke kwindawo ohlala ngayo, ixesha elichitha ngaphandle, kunye nombala wesikhumba. Ukukhanya kwelanga kunobungozi bomonakalo wesikhumba kunye nomngcipheko womhlaza wesikhumba.
Umlinganiselo wemihla ngemihla yokuncedisa i-vitamin D3 (eyona hlobo yendalo ye-vithamine kwaye yindawo ekhuselekileyo yokutya ngaphezu kwe-vitamin D2), yinto enengqiqo kubantu abaninzi. Njengoko kucetyiswa ubungqina besayensi, jolise izinga legazi le-30 ukuya ku-45 ng / ml. Kubantu abaninzi, oko kuya kuthetha ukuxhasana kunye ne-1000 ukuya kuma-2000 IUs of vitamin D imihla ngemihla.
> Imithombo:
> Bjelakovic G, Gluud LL, Nikolova D, et al: I-Vitamin D yokuxhaswa ngokuthintela ukufa kwabantu abadala. I-Cochrane Database Syst Rev 2014; 1: CD007470.
> Moukayed M, Grant WB: I-molecular link phakathi kwe-vitamin D kunye nokukhusela umdlavuza. Iimveliso zika-2013; 5: 3993-4021.
> Sempos CT, iDurazo-Arvizu RA, Dawson-Hughes B, et al. Ngaba kukho ubudlelwane obufana noJ obuphakathi kwama-25-hydroxyvitamin D kunye nokufa kwabantu bonke? Iziphumo ezivela kwi-US emele i-NHANES. J Clin Endocrinol Metab 2013, 98: 3001-3009.
> IBischoff-Ferrari HA. I-Vitamin D kunye nokuthintela i-fracture. I-Rheum Dis Clin North North 2012, 38: 107-113.
> I-Halfon M, i-Phan O, i-Teta D. I-Vitamin D: ukuhlaziywa kwimiphumo yayo kwimandla emisipha, umngcipheko wokuwa, kunye nobuthathaka. I-Biomed Res Int 2015, 2015: 953241.