This is way way old I know, but I thought I’d give a contrasting viewpoint. I too produce no natural testosterone. I noticed something was off around age 16 and started getting injections at age 17, I think. My pubertal development was more gradual, probably taking about a year and half or so. I noticed no significant personality changes during that time or since (other than being horny all the time, of course), and definitely no increase in aggression (I started as a very passive person if you want a baseline). I don’t think my physique changed that much (I was very skinny before taking testosterone and I still am), but I had a significant growth spurt. I got the occasional pimple, but no acne. Honestly the whole transition was very smooth and didn’t cause me any trouble whatsoever—leading me to theorize at the time that late teens might actually be a better time to go through puberty, because one is cognitively more able to handle the abrupt changes. The above seems to argue against that though.
Incidentally, my testosterone dose at the moment gives me a peak level that’s on the high end of normal. So I don’t think it’s a case of me not getting “enough” testosterone to make me aggressive, unless the effect only shows up for extremely high levels.
This is way way old I know, but I thought I’d give a contrasting viewpoint. I too produce no natural testosterone. I noticed something was off around age 16 and started getting injections at age 17, I think. My pubertal development was more gradual, probably taking about a year and half or so. I noticed no significant personality changes during that time or since (other than being horny all the time, of course), and definitely no increase in aggression (I started as a very passive person if you want a baseline). I don’t think my physique changed that much (I was very skinny before taking testosterone and I still am), but I had a significant growth spurt. I got the occasional pimple, but no acne. Honestly the whole transition was very smooth and didn’t cause me any trouble whatsoever—leading me to theorize at the time that late teens might actually be a better time to go through puberty, because one is cognitively more able to handle the abrupt changes. The above seems to argue against that though.
Incidentally, my testosterone dose at the moment gives me a peak level that’s on the high end of normal. So I don’t think it’s a case of me not getting “enough” testosterone to make me aggressive, unless the effect only shows up for extremely high levels.