Following on from my last post it seems I’m not the only one with this question in my mind. See the link belowfrom The Guardian as part of a study into the experiences of patients (and doctors) in the use of drugs to fight depression.
http://www.theguardian.com/society/2013/oct/29/do-antidepressants-work-prozac-paxil-zoloft
Loony Afternoons 
I have often asked myself this question. Never out loud and never where the voices in my head can hear me but I have asked it. The reply is always the same, if standing on your head in the dark at midnight every night for exactly three minutes worked to alleviate even some of the depression do it.