Note to self: do a search to see if anyone has done a study on correlation between levels of sex hormones and mood imbalances. Also check secondary sex hormones, androgens, what have you. Also see if there is any relationship between, say, sudden drops in testosterone and aggressiveness, in other words more or less agressiveness in wild fluctuations of testosterone as opposed to a steady level. Probably want to get to know someone involved in endocrinology on this one, unless you want to go through a steep learning curve.