ESmetalhead
New member
Vitamin D is a great supplement particularly in the winter months when we get less sun
https://www.ncbi.nlm.nih.gov/pubmed/28768407/
7X less risk of influenza if Vitamin D levels higher than 30 ng
https://www.ncbi.nlm.nih.gov/pubmed/27595379
Helps with sleep disorders
https://www.ncbi.nlm.nih.gov/pubmed/28475473