Du kan ta ganska enorma enheter vitamin d utan att bli förgiftad, upp till tillfälliga 600,000 IU.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4128480/
Sedan länge har det diskuterats att just Vitamin D är viktigt vid virus infektioner, samt för att lugna autoimmun sjukdomar:
https://www.ncbi.nlm.nih.gov/pubmed/30614127
"As was shown in vitro, activated human T and B cells and also the endothelial cells lining the upper and lower respiratory tract can transform inactive metabolite 25(OH)D into active 1α,25(OH)2D. This compound acts on immune cells in an autocrine, paracrine, or intracrine way (i.e., throughout the pathways inside the cells)"
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6121423/
https://www.tandfonline.com/doi/abs/10.3109/10408363.2015.109...
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6121423/
TLDR, du tar knappast skada av Vitamin D tillskott, de flesta har kroniskt låga nivåer. Just vid virus infektioner hjälper till skott våra t-celler, samt lugnar ner en eventuell cytotoxisk reaktion utav t-dödarceller. Just vid Covid-19 verkar en cytoxisk reaktion vara en av de stora dåliga händelserna för en patient.
(Innan någon säger att det bara finns en typ av t-celler, nej, det finns 3, There are 3 main types of T cells: cytotoxic, helper, and regulatory. Each of them has a different role in the immune response. Cytotoxic T cells (Tc cells) have a co-receptor called CD8 on their cell surface. As was shown in vitro, activated human T and B cells and also the endothelial cells lining the upper and lower respiratory tract can transform inactive metabolite 25(OH)D into active 1α,25(OH)2D. This compound acts on immune cells in an autocrine, paracrine, or intracrine way (i.e., throughout the pathways inside the cells, As was shown in vitro, activated human T and B cells and also the endothelial cells lining the upper and lower respiratory tract can transform inactive metabolite 25(OH)D into active 1α,25(OH)2D. This compound acts on immune cells in an autocrine, paracrine, or intracrine way (i.e., throughout the pathways inside the cells)))