I don't mean it quite like a hunger strike.rebel against the company, is on hunger strike you mean ?
I had more the thought that, considering how the company SO heavily controls every single aspect of their appearance, like hair colors,
clothes, accesories, and all the rest of it, that must feel so invasive to anyone. Like a loss of control over ones image, so many things that one has no control over, the company chooses how to present you.
So considering that eating disorders are often a comping mechanism to regain control over ones body, I felt like perhaps it is a coping mechanism to deal with the constant evasive loss of control over his image that comes with being a kpop idol like him.
Controlling ones food intake and restricting it, gives a lot of ppl with eating disorder a feeling of control.
But there could be other reasons, like just body dysmorphia, or maybe even the se**ual abuse (if that did ever occur...)