The deficiency is a very common deficiency in the world it is in fact a pandemic. In this video You can learn whether you have a vitamin D deficiency so that it can be treated. Vitamin D deficiency has been found to be associated with a higher incidence of COVID-19 infection.
The other vitamin D and immunity videos
How to boost your immunity in five simple steps – Dr Santhosh Jacob
Vitamin D the respiratory vitamin !! Learn how it protects you – Dr Santhosh Jacob