blood tests for lithium only monitor if it's not getting into toxic territory though, since it is not something that occurs in your body naturally.

And lol I personally do not want to be a guinea pig for some study and I would not recommend that to anyone unless they are really really really really really really really desperate. I read on these studies before and from what I gather from it, it's nothing definite.

And at this point depression is not diagnosable by brain scans, although they show some difference. Again, there is debate on causation, correlation... not valid diagnostic tool.

Certainly nones of this works without going through your symptoms... by talking about them.

Mental problems are helluva complicated.