ah, man. First off, the core of the problem is to reduce everything to the body. There are loads of critical analyses here that tell us that historically, much of what was actually caused by bad social organization was shoved onto the body. (there's quite a body of work on virology in this line, that the reduction of disease to "virus!" deletes the horrible conditions in which people lived, which were the actual cause, not some atomistic element entering an atomistic person).

"poor sleep is an epidemic throughout our society". No shit. It should be obvious that having to work 2, 3 jobs, still not making any money, being put in a constant state of worry about being thrown out of your house, getting sick and not being able to pay the bill for it, etc. gets you into this state. No pills can cure that.

Second, medicine knows next to nothing about the brain, and even less about sleep. There was a study done in a sleep clinic at the univsersity I used to work at, and the main takeaway was: they have no fucking clue what they're doing or how to help someone beyond giving them sleeping pills, all the bells and whistels were more useful for providing an "official diagnosis" and a "medical legitimation" that the "sick" could take to their families and employers to show that yes, they have a problem that's not imagined and can't be solved by the usual simple bullshit advice (warm milk with honey, keep off of your phone, have you tried Valerian, etc., all the patronizing stuff insomniacs hear all the time).