Hi there!

I read quite a lot about anorexia (fortunatelly not because i am suffering from it but because i wanted to understand it for personal reasons). I understand that anorexia nervosa is a mental illness which causes people to restrict their calorie intake. It usually comes with disordered body image. But from what I researched I think anorexia is more like a symptom of other mental problems (like depression, anxiety, disordered body image, etc.) and the core of it comes from personal experiences (like bad childhood, neglecting parents, bad relationship experiencies, etc.). I also think from my researches that it is mainly about control and is caused by the lack or loss of control in someone's life. 

So SOMETHING(S) happened that caused mental problems that caused anorexia nervosa. Sometimes the mental illness is also about control. 

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My question is the following: What other illnesses can be caused by mental illness? If somebody has quite a lot of problems, has the tendency in their family to have mental illness and start to develope, let's say, depressional behaviour, what other life threatening mental illness can be caused by it? If somebody doesn't develope anorexia, what other mental illnesses can be caused by bad experiences and mental problems?

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(here is an example: let's say my life is quite bad, i start to develope depression which is combined with me longing for control. This whole think together causes me to have anorexia, which takes over basically my whole life. Now let's say that it doesn't end up with anorexia, but with some other mental disorder which has the same effect and seriousness as anorexia. Is there a disorder like this and if yes, what it is?)

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I hope you can understand my question. Sorry if not, english is not my first language and I can't really phrase it even in my mother tongue, but I have been thinking about it a lot. 

I also think that my understanding of anorexia and also about other eating disorders may not be correct, as i am not suffering from it and also not a doctor. I apologise for it in advance. I am also open to anybody explaining the causes of anorexia more deeply to me. 

(one more thing: I am not looking for other eating disorders as answers, more like other mental illnesses) 

Thanks!