>>Anyone who lives in the northern hemisphere especially. It might even be warm enough in March or April to sit outside and sunbathe, but due to the sun angles and earth tilt, there are too many layers of atmosphere for the suns rays to penetrate. Consequently it doesn’t do any good at all in terms of building natural D. This is what I have been told.<<
I have absolutely NO science to back it up, but I’ve always suspected that Vit D deficiency in the general population can be laid at the feet of fear over sun exposure skin cancer, the liberal use of sunblock, and just generally staying out of direct sun. Of course it’s worse in the Northern hemisphere where we’re effectively limited to about 4 months out of 12 that have more sunshine than gray skies.
On a long seminar about vitamin D which I watched from a link here on Freerepublic, the presenters said that when your shadow is shorter than your height, you not getting vitamin D from sunshine because the sun’s rays are coming through too dense an atmosphere.
It would’ve been so easy for the CDC to suggest vitamin D supplements early in the pandemic, perhaps even provide free vitamin D supplements. They did not do this because, in my opinion, they wanted their control and the public’s fear, to last through the 2020 election.