I mean vitamin D prevalence could be an indicator of something else..
On the other hand, it's been used as a supplement for a long time. So hopefully it's not outright dangerous in limited quantities.
Whether or not such a bump gives the same benefits as slow ramping (and if it delivers then more quickly or not) is something I haven’t found any studies on - but I have found in the past studies indicating sun exposure is better than supplements for the same attained blood vitamin D levels (not surprising, as vitamin D is far from the only result of sun exposure)
That said, I can totally imagine people downing a megadose of vitamin D, declaring themselves immune, and going out to lick doorknobs immediately.
Public health officials don't actually care about public health. Another critical issue they've willfully chosen to ignore is the dramatic comorbidity of COVID-19 and obesity.
We are told to mask up and social distance, but nobody in the public health sphere has suggested eating less.
They are not serious people.
There would be a better outcome if people were physically active and not depressed/anxious(this reduces with socializing).
Put down the hamburger and go for a run instead of handing over the keys to the nanny-state that’s proven itself incompetent.
Abstaining from junk or doing exercise has an immediate effect on your metabolic health.