I hope you'll agree, however, that it is not an epidemiological problem. It isn't contagious, in any conventional, medical sense. It isn't spread by sneezing or kissing or shaking hands or touching contaminated surfaces. It isn't an "epidemic," and it isn't a disease.
I heard you can get it from a toilet seat...
Overall, it is a societal problem, and the root causes go much deeper than any mental problems. I could start a list of (what I think) are contributory problems to the sad state of affairs that our society has come to, but it would most likely exceed the limits of a post.
I can start it off with a few, however:
(1) Breakdown of the American family
(2) Loss of jobs due to shifting of our industrial base to other countries
(3) Johnson's Great Society (i.e. free govt. handouts)
(4) Our drug culture, which sprang from the 70s
(5) Television as the electronic baby sitter
(6) Media, including news, Hollywood, music industry and video games
(7) Our endless involvement in Orwellian foreign wars, designed to keep "the people" from focusing on problems at home
Etc., etc., etc.....
These are just a few of the problems that I (as in me, myself) see as pertinent to our current societal problems. The actual list is endless. All these and more have contributed to the gradual demise of the classical American society of yore. I've seen it happen in my lifetime and I sure as Hell don't like the way it's turning out
As always, YMMV