https://www.bmj.com/content/369/bmj.m1548/rr-6
Previous research and hypothesis have considered that Ethnicity may play more of a role than economic factors , that COPD is worse in those in past where Vit.D is low and can be a preventative as those that follow Dr. Coates know.
The daily dose for those is suggested here. (20-50ug)
For further reading
Why Vit-D is likely important in the fight against Cov19 in your body.
Quote:
A remarkable recent preprint (Alipio),[26] entitled, 'Vitamin D supplementation could possibly improve clinical outcomes of patients infected with Coronavirus-2019 (COVID-19)', examines vitamin D status, and hospitalization outcomes in 212 COVID-19 patients, using 4 categories: (1) Mild without pneumonia, (2) Ordinary confirmed pneumonia with fever, (3) Severe hypoxia and respiratory distress, (4) Critical respiratory failure requiring intensive case monitoring. Alipio observes, "Vitamin D status is significantly associated with clinical outcomes (p<0.001). For each standard deviation increase in serum 25(OH)D, the odds of having a mild clinical outcome rather than a severe outcome were increased approximately 7.94 times; the odds of having a mild clinical outcome rather than a critical outcome were increased approximately 19.61 times," indicating that, in COVID-19 patients, increased serum 25(OH)D level could improve clinical outcomes, and/or mitigate the worst (severe to critical) outcomes. Conversely, decreased serum 25(OH)D levels could worsen clinical outcomes. Normal 25(OH)D levels were classified as >75 nmol/l (30 ng/ml). Deficient were those below 50 nmol/l (20 ng/ml). Deficiency definitions vary: <25 nmol/L, (10 ng/ml) UK; and 50 nmol/L (20 ng/ml) USA.[26]
Previous research and hypothesis have considered that Ethnicity may play more of a role than economic factors , that COPD is worse in those in past where Vit.D is low and can be a preventative as those that follow Dr. Coates know.
The daily dose for those is suggested here. (20-50ug)
For further reading
Why Vit-D is likely important in the fight against Cov19 in your body.