I find it to be helpful with depression it helps my mood(temporarily but that can still be helpful for getting through a day)...my therapists and psychiatrist just say i shouldn't overdo it but they don't think its a factor in my depression or other conditions.

I have read studies indicating cannabis can be helpful for depression, it good they are studying that...I know some people scoff at the idea that marijuana could be medicinal let alone that it can treat so many various ailments but the more research that comes out the more that seems to be the reality of this plant.

But that is just my opinion I don't advocate using it or not using it...that is a personal choice. I also recognize that it can effect some people negatively.

But yeah If your depression symptoms were bad before the marijuana use...I am suprised the psychiatrist would come to the conclusion that its the main cause of your depression...not to mention being a psychiatrist he should know there is no single 'cause' anyways there are multiple factors that cause mental illness. But yeah there is a correlation between depression and cannabis use...and its theorized that it has to do with self medicating though some people read the correleation as 'marijuana causes depression' which the correlation does not really imply.