If you suffer insomnia this is where you should be starting with.
PS: I suffered insomnia, spent a lot of time working through it, and got medical advice.
Prefer residences and offices with natural light, or take a walk outside around noon (wear sunscreen). There you go...
Then, amount of papers doesn't necessarily translate into scientific rigor. Since research universities adopted a "publish or perish" policy there's a deluge of junk science.
update: corrected typo