A recent German study found a linear relationship between vitamin D levels and mortality from covid, and essentially, zero morbidity for those with a D level above 50 ng/mL.
“At a threshold level of 30 ng/mL, mortality decreases considerably. In addition, our analysis shows that the correlation for the combined datasets intersects the axis at approximately 50 ng/mL, which suggests that this vitamin D3 blood level may prevent any excess mortality."
Studies have already shown that one is 14 times more likely to die from COVID with vitamin D deficiency.
A meta-analysis of 23 published studies containing 11,901 participants found that one who is vitamin D-deficient was 3.3 times more likely to get infected with SARS-CoV-2 than one who is not deficient.
The reality is that most people’s levels are below 30 and many are closer to zero, especially among the elderly population.
With studies having shown zero correlation between lockdowns, masks, and vaccines and better COVID outcomes, there are now 142 studies vouching for the near-perfect correlation between higher vitamin D levels and better outcomes in COVID patients.
It is beyond criminal that 20 months into this endeavor there has not been a national campaign percolating down to primary care physicians to test and supplement vitamin D levels accordingly.
As the authors explain, the main cause of death from COVID stems from a “cytokine storm” when the body’s immune system releases too many toxic cytokines as part of the inflammatory response to the virus.
Vitamin D is the key regulator of those cells, and the insufficient amount of D is nearly synonymous with a greater risk for a cytokine storm.
In many ways, a cytokine storm is literally the outcome of vitamin D deficiency.
@KanekoaTheGreat
You may have noted that I'm saying nothing, since I'm just quoting one of the most focused resources available on Vitamin D, ie the "Vitamin D Society".
More from the very same page:
Humans evolved in the horn of Africa, close to the Equator over 30,000 years ago. They spent their days out in the full sun, with no clothing, hunting and gathering food. Their skin pigment evolved and protected them from sun burns and allowed the production of vitamin D through the skin. Nature never intended for humans to live and work indoors, in cubicles, without sunshine exposure.
Non-Human Primates: 125 – 200 nmol/L Vieth 2004 – Why the optimal requirement for Vitamin D3 is probably much higher than what is officially recommended for adults
Maasai and Hadzabe, Tanzania: 115 nmol/L Luxwolda 2012 – Traditionally living populations in East Africa have a mean serum 25-hydroxyvitamin D concentration of 115 nmol/L
Outdoor Workers – Lifeguards: 163 nmol/L Haddad 1971 – Competitive protein-binding radioassay for 25-hydroxycholecalciferol
Outdoor Workers – Puerto Rico Farmers:135 nmol/L Haddock 1982 – 25(OH)D serum levels in normal Puerto Rican population and its subjects with tropical sprue and parathyroid disease
Outdoor Workers – Nebraska: 122 nmol/L Barger-Lux, Heaney 2002 – Effects of above average summer sun exposure on serum 25-hydroxyvitamin D and calcium absorption
Indoor Tanners: 95 nmol/L Schwalfenberg 2010 – Addressing vitamin D deficiency in Canada: A public health innovation whose time has come
Average Canadian: 68 nmol/L Statistics Canada – Langlois 2010 – Vitamin D status of Canadians as measured in the 2007 to 2009 Canadian Health Measures Survey
Dermatologists: 35 nmol/L Czarnecki 2009 – The vitamin D status of Australian Dermatologists
GrassrootsHealth and over 40 Vitamin D Scientists recommend achieving an optimal Vitamin D level for disease prevention of 100-150 nmol/L using a 25(OH)D blood test. This is the natural levels that the human body had as it evolved over thousands of years. Everyone should have their vitamin D 25(OH)D blood serum levels tested and make sure they are within these guidelines.
Please see also ICWB (former "Vitamin D Council", which was one of the first association to actively promote Vit D on a large, public scale). These pages especially, regarding recommended dosages and risks of overdosing:
https://icwb.com/vitamin-d-dosage
https://icwb.com/vitamin-d-overdosing
Overall, 4,000 or 5,000 UI per day (and up to 10,000 UI in case of deficiency and/or no supplementation in the recent past) looks like the optimal dose on the long run.