In my desperate research about me not able to sleep and lots of other symptoms like fast heart rate and headaches, dizziness and numbness, pins and needles, depression and anxiety I have found this site, link below, that it is very interesting and I want to share with you and if you have time to read it all and to share your opinions will be great.
I can say that could explain a lot about vitamins, sleep and body connections.
And I can say that I am D3 deficiency from September 2017.
Thank you xxx
Admin note: post title edited.
site does appear to be a promotional site for a vitamin supplement.