[experimenting]

For a long time, the Mayo Clinic claimed vitamin D supplementation to combat SARS infections had no scientific proof and was possibly dangerous.

If such an authoritative source claims pseudo science and danger, your annecdote could very well be true.

[lowmagnet]

Low vitamin D reduces correct responses by the immune system, and contributes to autoimmune disorders and results in higher possibility of infection.

[sacnoradhq]

It's not a surprise that fundamental health improves outcomes against novel infections. Public health should be encouraging significant evidence-based habits routinely.