@petealexharris
I think anorexia nervosa is a pretty good comparison to be honest. From what I understand, the consensus has softened a bit since I was paying close attention, but it used to be that anorexia nervosa (in its classic Karen Carpenter manifestation) was widely understood as a response to political-economic pressures.
Some mental illness is fully organic in origin -- stemming from genetics or injury -- but a lot of it is the direct result of interacting with an inhumane environment. The three causes are not mutually exclusive, and mental illness caused by one can cause or exacerbate that caused by another. This appears to quite certainly be the third case -- interacting with an inhuman environment (the modern world) has produced inhumane pressures (these guys think they are worthless if they don't have sufficiently sharp cheekbones), and the inhumaneness of the world is a political problem (arguably, it is the only political problem, and all other political problems stem from flawed attempts to solve it).
@Doomscroll @cstross