D-vitamin-toksicitet er ikke et problem

Selv ved meget højt indtag ser D-vitamin ikke ud til at forårsage toksicitet, afslører en amerikansk undersøgelse.

D-vitamin-toksicitet er ikke et problemNogle eksperter har advaret folk mod at tage D-vitamin i doser, der overstiger den anbefalede daglige tilførsel (ADT), idet de har hævdet, at overskydende D-vitamin kan føre til problemer såsom hypercalcæmi, en tilstand karakteriseret ved forhøjed calciumindhold i blodet, der kan forårsage svaghed, nyresten og hjerne- og hjerteforstyrrelser. Imidlertid har en undersøgelse foretaget af forskere ved Mayo Clinic vist, at D-vitamin-toksicitet ikke er et problem. Forskerholdet analyserede bloddata indsamlet i perioden 2002-2011 fra patienter, der deltog i Rochester Epidemiologi Project, og gjorde nogle interessante observationer i den forbindelse.

Det er almindeligt kendt, at anvendelsen af D-vitamin i de vestlige lande er steget i de seneste ti år. Folk tager D-vitamin for at styrke knogler og immunforsvaret men også for at sænke deres risiko for diabetes, cancer, hjerte-kar-sygdomme og andre sygdomme, hvor D-vitamin i denne forbindelse har vist sig at spille en vigtig rolle. Forskerne fra The Mayo Clinic ønskede at undersøge, om tilskud i høje doser havde konsekvenser for menneskers sundhed men fandt, at giftige niveauer faktisk er meget sjældent.

 

Kilde

Vitamin D toxicity rare in people who take supplements (report)

www.sciencedaily.com, 30 April 2015


 

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