Thanks for that update NanniGong.
Your statement:
I cannot imagine how mental problem can act on the body, have no experience like that.
I can help a little with that. High anxiety and/or emotions can put our bodies in a state of hyper arousal (medical term for a joint physical/ psychological state) and/or hyper vigilance. (ditto medical term) In sudden, situational cases of danger, our fists tighten, our shoulders go up, and we engage our 'fight or flight' response. Once the 'danger' is gone, we relax and our body returns to normal, our immune system remaining uncompromised.
In chronic or protracted cases of fear or danger however, that state of high anxiety doesn't ever relax. We live poised for fight or flight 24/7. The state begins to compromise our immune system. Human beings cant live strung like high tensile steel for too long before it begins to affect our bodies and endocrine systems. What gets soldiers through this a lot of the time is the sense of brotherhood in their unit, but they all suffer it to some degree. I speculate Toshi felt isolated, separated from his brothers by the tenets of the sect. People who live in a state of constant hyper arousal (the phrase describes being alert, fearful, worried and not safe at all times) often become too tense to eat, unable to sleep, unable to control their thoughts and dreams. Their bodies end up at the mercy of their minds, nervous energy burning calories that are not being replenished. Sometimes they can override the mental tension and get things back under control on their own, other times they need someone to intercede and remove them from the environment that is causing the state of hyper arousal. Sounds like Toshi's trip to see Yoshiki in January was exactly that. He was able to relax, he felt safe enough to speak about his ordeal and set the wheels of his rescue in motion. My references are 2 years elementary psyche studies in my youth and my own diagnosis and treatment over the past 20 months. Feeling safe is one of the main stressors and a driving desire. I doubt Toshi felt safe any longer in the HOH environment. I wonder if he ever really did. Hope that helps a little.