chl

dminder is a great app to estimate Vitamin D "intake"/production through sun exposure (and also food, albeit this won't matter much for most people):

http://dminder.ontometrics.com/

I only wish the algorithm used to derive the estimates was public/documented somewhere ...

http://dminder.ontometrics.com/Estimation.html

My guess: It might not make _the_ difference whether you _get_ it, but it's not at all unlikely (given all the evidence that has accumulated so far & extrapolation from experience w/ other viral respiratory infections) that it will influence disease severity significantly.

There are now 24 trials (of some kind) listed on ClinicalTrials.gov:

https://clinicaltrials.gov/ct2/results?term=vitamin+d&cond=C...

At some point, high-quality RCT results will be in.

To learn more about the LINC (and why, in the grand scheme of things, it was so incredibly important):

- "The LINC Revolution", in "Biomedical Computing" by Joseph November: http://www.amazon.com/Biomedical-Computing-Digitizing-Univer...

- "Computing in the Middle Ages" by Severo Ornstein: http://www.amazon.com/Computing-Middle-Ages-Trenches-1955-19...

- "The Dream Machine" by M. Mitchell Waldrop: http://www.amazon.com/The-Dream-Machine-Licklider-Revolution...

R.I.P.

It _can_ be used for commercial purposes; you have to secure Kx' explicit permission, though.