Vitamin D is the source of life! Kinda true, but this page brings it to an extreme.
The VitaminDWiki
I don't think this Wiki holds much truth, but the sun can definitely be healthy!
My favourite Book also touches on this topic, and i can definetly recommend it!
It's about a little android girl, who is powered by sunpower and serves as a playmate for real children!
I don't really wan't to get into more detail, definetly check it out it is sooo good.
Klara and the Sun