I-Vitamin D isiza umzimba wakho ukuthi umunce i-calcium futhi ugcine amathambo aqinile impilo yakho yonke. Umzimba wakho ukhiqiza i-vitamin D lapho imisebe yelanga ye-UV ithinta isikhumba sakho. Eminye imithombo emihle yale vithamini ifaka phakathi izinhlanzi, amaqanda, kanye nemikhiqizo yobisi eqinisiwe. Iyatholakala futhi njengesengezo sokudla.

I-Vitamin D kumele idlule ezinqubweni eziningana emzimbeni wakho ngaphambi kokuba umzimba wakho ukwazi ukuyisebenzisa. Ukuguqulwa kokuqala kwenzeka esibindini. Lapha, umzimba wakho uguqula i-vitamin D ibe yikhemikhali eyaziwa ngokuthi i-25-hydroxyvitamin D, ebizwa nangokuthi i-calcidiol.

Ukuhlolwa kwe-25-hydroxy vitamin D kuyindlela engcono kakhulu yokuqapha amazinga e-vitamin D. Inani le-25-hydroxyvitamin D egazini lakho liyinkomba enhle yokuthi umzimba wakho une-vitamin D engakanani. Ukuhlolwa kunganquma ukuthi amazinga e-vitamin D yakho aphezulu kakhulu noma aphansi kakhulu.

Ukuhlolwa kwaziwa nangokuthi ukuhlolwa kwe-25-OH vitamin D kanye nokuhlolwa kwe-calcidiol 25-hydroxycholecalcifoerol. Kungaba inkomba ebalulekile yokuthii-osteoporosis(ubuthakathaka bamathambo) kanyeama-rickets(ukukhubazeka kwamathambo).

Udokotela wakho angase acele ukuhlolwa kwe-25-hydroxy vitamin D ngezizathu eziningana ezahlukene. Kungabasiza ukuthi bathole ukuthi i-vitamin D eningi kakhulu noma encane kakhulu ibangela ubuthakathaka bamathambo noma ezinye izinkinga. Kungaphinde kuqaphe abantu abasengozini yokuba ne-hypothyroidism.ukuntuleka kwevithamini D.

Labo abasengozini enkulu yokuba namazinga aphansi e-vitamin D bahlanganisa:

• abantu abangatholi ukuchayeka kakhulu elangeni
• abantu abadala
• abantu abanokukhuluphala ngokweqile
• izingane ezinceliswa ubisi lwebele kuphela (ifomula ngokuvamile iqiniswa ngevithamini D)
• abantu abaye bahlinzwa nge-gastric bypass
• abantu abanesifo esithinta amathumbu futhi esenza kube nzima ngomzimba ukumunca izakhamzimba, njengeIsifo sikaCrohn

Udokotela wakho angase afune ukuthi wenze ukuhlolwa kwe-25-hydroxy vitamin D uma sebekutholile ukuthi unesifo sokuntuleka kwe-vitamin D futhi befuna ukubona ukuthi ukwelashwa kuyasebenza yini.