It is important to note this study was done in UK, which uses the measure for blood Vitamin D as bmol/L (nanomol per liter). In the US we use the measure ngm/mL (nanograms per mililiter). In comparieng studies in the US with those overseas divide nmol/L by 2.5 to get ngm/mL. Thus 25 nmol/L equals 10 ngm/mL. According to US govt authorities this is a dividing line between deficient and severely deficient. The 50 nmol/L figure equals 20 ngm/mL. US authorities consider this the dividing line between deficient and normal. US endochrine professionals consider this figure is too low. They consider figures between 20 ngm/ml and and 29 ngm/mL as insufficient. And 30 ngm/mL and above as normal. My health provider Kaiser Permanente considers between 50 and 80 ngm/mL as OPTIMUM.
The study below performed in Turkey and published Nov. 2021 Was valuable for several reasons. First of all it used the original Dr. Zelenko 3 part early Covid treatment of zinc, HCQ and Azithromycin. It added Vitamin D3 and Vitamin C in 2 strengths. A gram (1000 mg) a day of C for the controls, and much higher amount of C given IV (intravenously) for test subjects. The goal was to see if IV C would reduce time spent in the hospital. It did, spectacularly, compared with $3000 a treatment Remdesivir.
cureus.com/articles/76496-therapies-to-prevent-progression-of-covid-19-including-hydroxychloroquine-azithromycin-zinc-and-vitamin-d3-with-or-without-intravenous-vitamin-c-an-international-multicenter-randomized-trial
Then the doctors examined the blood tests given to study participiants before the trial began. They were ASTONISHED to discover that NOT ONE patient had an optimum level of blood Vitamin D. They were using the relatively low figure of 30 ngm/mL (75 nmol/L) or more as their measure of OPTIMUM. Only 3 of almost 240 subjects were insufficient, and the rest divided between deficient and very deficient. The one person who died had 3 ngm/mL.
Thus I think it is very reasonable to say, test your blood, talk with your doctor, and get your BLOOD VITAMIN D LEVEL TO THE OPTIMUM LEVEL. This should make it unlikely you will end up in a hospital. At weight 145 lbs, and 18 months of taking 2000 IU of D in summer, and increasing gradually to 5000 IU the 4 winter months, when KP tested me I was in the OPtIMUM range at 66 ngm/mL.
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This MD above says 30000 D3 daily. I take about 15000 D3 daily. With K2 and magnesium. My D3 levels are 75 ng/ml
D3 toxicity is mostly myth
Thx for that report...I have been pushing Vit D3 for years...but remember, you must take K with it...or “hardening” of the arteries could be a problem
And I have added Vit C to my nag with family recently
That docs do not suggest or do routine Vit D level tests is malpractice in my eyes