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Re:Tell HN: My Brother Died Last Week. His Death Will Not Be... by dreamdu5t on Thursday February 13, 2014 @11:33AM (#7232240)
So you're claiming suicide is caused by a biological mechanism? That once we identify that mechanism, we could prevent suicide?

Great, maybe that's the case. However, there's no more evidence for that than the assertion that suicide is a choice.

Re:Tell HN: My Brother Died Last Week. His Death Will Not Be... by Mz on Thursday February 13, 2014 @03:37PM (#7234122)
There is some evidence that brain chemistry is influenced by diet and dietary changes can help with depression. For example: http://www.mayoclinic.org/diseases-conditions/depression/exp...

That fits with my experience. I have to be very careful with peanut oil, for example. It does terrible things to me.

So, in short, it is possible that depression and other mental illness has biological roots. There are also social factors and other factors, but in some sense mental illness may well be a medical illness.