most of us can manage it and don't go too deep into depression.. but let's say a weak person gets depressed (of broken heart or for whatever reason), and if the depression is not treated, and the person cannot handle it by him/herself... it really might cause the physical illness, it's proved.
that's why the saying "take it easy" is so popular.. we DO have to take it easy sometimes, otherwise we may end up with paying by our health or even life.

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Whatever Turns You ON...