Supplements special: Vitamin D

A research-led overview of an essential supplement in my stack

I’m assembling a repository of the research relating to the various supplements I take for paid PoP Club subscribers, starting with the most important ones. Last time, I wrote about magnesium, and today I’m writing about Vitamin D.

I hope you like this overview. These supplement guides take ages to write but I hope it saves you some time on digging arou…