I have taken D3 got years. Veronica’s idea to compensate for the relative lack of sunshine in winter. What is interesting is that in the last couple of years of Veronica’s life, when I was determined to be as fit as possible to care for her, I got my weight down from 14-2 to 12-7 and kept it there, I seemed to be forever on the verge of colds. After Veronica died I gave up worrying about my weight which has slowly edged up to 13-7, and I have scarcely seen a sign of a cold. Mentioned this just before lockdown began, to the practice nurse, who reckoned that I had forced myself below my ‘natural’ weight and that my immune system had suffered as a result
Whether the D3 really helps I don’t know, but it certainly does no harm
Mike