Robin Whittle is a computer programmer and electronic technician living in Daylesford, Victoria, Australia. Since March 2020 he has been raising awareness of the need for proper vitamin D3 supplementation in order to provide the immune system with the 25-hydroxyvitamin D it needs to function properly.
Inadequate vitamin D3 intakes result in most people having a 1/10 to 1/2 of the 25-hydroxyvitamin D their immune system needs to function properly. This is rela... Read more.