@Callistemon it seems that most of the BAME people I have mentioned the research to is aware of this.
Even pale skinned people need vitamin D to support their immune systems, especially this time of year and with covid in the air, more than ever now.
Dr John Campbell is not the source of the information I was given, but I have watched many of his videos and they seem to corroborate it. He is retired, but I doubt you will hear any medical people who are not of retirement age saying this. At least, not on record.
Opinions on this crossword, please


