For those of you who want to reference the actual study report with all its statistical minutia and methodology, the link is:
https://academic.oup.com/ajcn/advance-article/doi/10.1093/ajcn/nqac107/6572356?login=false
First some facts about Vitamin D. US uses the measure ng/mL (nanograms per milliliter). Australia, UK, Turkey and many other countries use nmols/L (nanomols per liter). To convert to US you must divide nmols/L by 2.5. Therefore the figures
50 nmol/L (normal) and 25 nmol/L (low) in the article, in US are 20 and 10 ng/mL. Our dear friends in US govt. agree 20 and 10 are normal and low. The US professional society for endochronologists says 30 is normal, and 20 insufficient. The Turkish link below says above 30 ng/mL (figure converted from 70 nmols/L) is OPTIMUM. For them below US 30 is insufficient, below 20 is deficient, and below 10 is severely deficient. According to US health care organization Kaiser Permanent, between 50 and 80 ng/mL is OPTIMUM. This higher figure recognizes newer information that D levels for immune system health are higher than those for bone health (originally calculated to prevent rickets and perhaps osteoporosis).
The Turkish Covid study linked below had several important findings using almost 240 hospitalized patients with Covid and often comorbidities of Diabetes, Heart Disease, and/or Cancer. 1) The Zelenko 3 part early treatment protocol even seemed to work in their hospital setting with the addition of 5000 IU of Vitamin D and a gram of C daily. Their experiment was to use a modest amount of C versus high dose IV (intravenous) Vitamin C (as much as 24 grams in 24 hours). The IV Vitamin C sighificantly reduced the amount of time spent hospitalized. Probably far better than Fauci’s beloved Remdesivir ($3000 per treatment). The big SURPRISE came when they looked at the original blood tests from before starting the study. Not one person had OPTIMUM Vitamin D levels (above 30 ng/mL). Three had insufficiet levels between 20 and 29 ng/m:. The rest were nearly evenly divided between deficient (below 20) or severely deficient (below 10 ng/mL). Remember all nmol/L figures in this Turkish study must be divided by 2.5 to find US ng/mL figures.
Thus it appears the best way to stay out of hospitals is to maintain OPTIMUM Vitamin D levels. The only death in that study entered the hospital with a 3 ng/mL level of D. Also it appears the Zelenko Protocol, using his amounts of Zinc, HCQ, and Azithromycin with addition of Vitamins C and D works even in a hospital setting.
So get your blood Vitamin D tested, and determine how much Vitamin D supplement you may need to reach the optimum level. I, a 140 lb. 83 year old woman living in the midAtlantic area started taking 3000 to 6000 IU of Vitamin D summer of 2020 varying dose according to season and sun exposure. Last December Kaiser Permanente measured me at 66 ng/mL. My 240 lb. 6’1” son was advised by his doctor to increase from 5000 IU to 10,000 IU of Vitamin D for winter depression. A medium large white man I met says his doctor gives him 40,000 weekly. A tall black woman told me her doctor put her on 10,000 IU daily a decade ago. The dark skin of African Americans, American Indians, and Middle Eastern People and South Asians explains their much higher death rate since they often don’t absorb enough Vitamin D from the sun living in the US.
DENNISW, be careful you don’t overshot Kaiser Permanente’s OPTIMUM range of 50 to 80 ng/mL blood level of D.