More Evidence Vitamin D Is Effective in Preventing COVID-19, by Dr. Joseph Mercola

A personal testimonial. When Covid got started, I began riding my bike here in sunny Albuquerque an hour a day. I recently had Covid. It lasted about three days and with a little ivermectin it was gone. Vitamin D deficiency is a Covid comorbidity. From Dr. Joseph Mercola at

vitamin D

Story at-a-glance

  • Recent research assessing the effectiveness of vitamin D supplementation for the prevention of COVID-19 in frontline health care workers found only 6.4% of those taking vitamin D tested positive for COVID, compared to 24.5% of controls
  • The treatment group received 4,000 international units (IUs) of vitamin D per day for 30 days. The use of fixed dosing is a shortcoming of this study, as the most accurate way to assess vitamin D’s benefits is by comparing the effects of different serum vitamin D levels
  • Data from GrassrootsHealth’s D*Action studies suggest the optimal level for disease prevention and good health is a vitamin D level between 60 ng/mL and 80 ng/mL. The cutoff for sufficiency appears to be around 40 ng/mL
  • Sun exposure is exponentially superior to oral supplementation, as it not only triggers vitamin D production but also melatonin production inside your mitochondria

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