"Some authorities now believe that low 25(OH)D is a consequence of chronic inflammation rather than the cause"
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4160567/
My thought is vitamin D levels would be lower on an aged population with less sunlight overall. Surprised to find such a difference near the equator. They compared low levels to high levels and found 10 times less deaths at high levels. Dr. Campbell just reviewed that article and only question he had was on the old school way they reported D3 levels.
It does sound promising. I’ll go back and look at his tapes for sure. Thanks, justa-hairyape.