Probably need a few months of good vitamin D levels for best effect.
No better time to start!
yeah certainly can’t couldn’t hurt- but supplements work too- D is one supplement that really does work quickly- some supplements don’t work well- but D does- D3 especially- (I was down to 8 on my Vit D count in blood test- but got it back up to 35 where it is supposed to be very quickly with prescribed mega dose-
The study i read about was studying D3 supplements on elderly who had covid