Vitamin D Deficiency and Covid-19

Vitamin D deficiency is so widespread, and so predictive of bad health outcomes, that it has itself been called a pandemic by many scientists, even in the title of at least one peer-reviewed scientific paper1Others have argued that widespread vitamin D deficiency may be a symptom, not a cause, of ill-health2. In A Hunter-Gatherer’s Guide to the 21st Century, Bret Weinstein and I contend that the rush to supplement with vitamin D is yet another example of reductionist, metric-heavy thinking that passes for modern medicine and science (excerpted here). Our broader point stands, including that we moderns are making matters worse with many of our lifestyle choices, such as spending too much time inside, and slathering ourselves with sunscreen when we do venture out. But with particular regard to whether WEIRDos3 ought to supplement with vitamin D, we (both Bret and I) now believe that we were wrong.


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