In a June 22, 2020, Orthomolecular Medicine News Service press release,1 Damien Downing, president of the British Society for Ecological Medicine, outlines how we could resolve the COVID-19 pandemic in 30 days for about $2 per person, simply by taking affirmative action to raise vitamin D levels. The downside or risk of doing this is basically nil, while the potential gain could be avoiding another COVID-19 spike altogether.
"If we could arrange to give everyone vitamin D, and it failed to protect them, so what? The risk from not acting is much greater than the risk from acting," Downing says, adding: "If you caught the COVID19 virus right now, having a good vitamin D status (from already having taken a supplement) would
-Reduce your risk of the disease becoming severe by 90%
-Reduce your risk of dying by 96%
This is not 'proven' or 'evidence-based' until we have done controlled trials comparing it to placebo … But the data, already strong, has been pouring in since the start of the pandemic."
Although the required prospective randomized controlled trials using vitamin D have not yet been completed, they are indeed underway and results from many will be in before year's end. You can visit the clinical trials registry to review the current state of these trials.2,3 As of June 2020, there were over 20 studies in progress on the use of vitamin D in COVID-19.
Vitamin D and COVID-19
Downing goes on to cite research and supporting data. Among them is a study4 from the Philippines, which found that for each standard deviation increase in serum vitamin D, the odds of experiencing only mild disease rather than severe illness was 7.94 times greater, and the odds of having a mild clinical outcome rather than a critical outcome was 19.61 times greater. According to the author:
"The results suggest that an increase in serum 25(OH)D level in the body could either improve clinical outcomes or mitigate worst (severe to critical) outcomes, while a decrease in serum 25(OH)D level in the body could worsen clinical outcomes of COVID-2019 patients."