magnesium deficiency is very common... and if severe enough could cause certain forms psychosis... so... just to be on the safe side maybe you might try taking magnesium tablets just to be sure...
like i said... it's just a thought... but would be a simple enough problem to correct... as a matter of fact... i usually make it a habit of taking two tablets that contain a combination of "calcium/magnesium/zinc" once a day... (but mostly i take it for regularity)...