This is really interesting.
Only thing that bugs me is the one comment in the last paragraph:
[Paul Andrews] also warns that we ought to continue trying to determine whether depression has evolutionary benefits — helping with deep analytical thought, for example — before rushing to medicate.
While I agree that living with anxiety and depression has provided me with certain benefits in how I think and process information, I do not enjoy the constat worry and fear and lack of motivation and energy and the suicidal thoughts, as I’m sure most would agree. Living with a mind that thinks a lot about dying and wishes I didn’t exist is not easy or fun.
I would gladly lose the constantly being hyper aware of my surroundings, to the point of feeling as though I had ADD (my doctor has not ruled that diagnosis for me out yet). I would gladly lose the hours spent in deep analytical thought. I would gladly lose the insomnia and worry that keeps me awake at night, of our meant that I could be happy.