Perhaps the Vitamin D deficiency pandemic caused the COVID-19 pandemic - Aug 17, 2020

Support for the conjecture

Fact: (before 2020) more viral infections if low Vitamin D
7X less risk of influenza if Vitamin D levels higher than 30 ng – Oct 2017

Observation More likely to be infected and/or die of COVID-19 if low vitamin D
COVID-19 treated by Vitamin D - studies, reports, videos as of July 29 included
21 trials, +10 observational studies, +7 recommendations, +34 associations, +58 speculations

Fact: Vitamin D levels have been crashing since 1993

click on chart for details

Fact: Low Vitamin D is associated with poor health

666 Vitamin D Meta-analyses finding an association of low Vitamin D with 26+ health problems

Fact: Supplementing with Vitamin D improves Health
50,000 IU of Vitamin D twice a month proven to fight 25 health problems
50,000 IU of Vitamin D once a week proven to fight an additional 17 health problems

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See also VitaminDWiki

• There are 2 concurrent pandemics – COVID-19 and Vitamin D deficiency – May 13, 2020
  • vs conjecture on this page that D ==> COVID
• Preventing a COVID-19 pandemic with Vitamin D – Grant April 2020

See also web

• Perhaps solve the other pandemic: Vitamin D deficiency — to help beat Coronavirus?
  • April 9, Joanneova - Australia 258 comments 10 days later
• Vitamin D deficiency as risk factor for severe COVID-19: a convergence of two pandemics
  • preprint May 5. updated May 18
  • 186 patients. Lower Vitamin D levels associated with worse COVID-19 only for males
  •