COVID-19 Outbreak (Update: More than 2.9M cases and 132,313 deaths in US)
I've always been meh on Vitamin D. Maybe one of the doctors can explain it. I have a hard time unpacking the Vitamin alone compared to the idea that folks who spend a lot of time outside are probably healthier in general. i.e. you'd see a correlation with high Vitamin D and low weight, lower cholesterol, cardio fitness, etc.
Just a guess though, so I'll gladly be proven wrong.