My point is, if you have severely low progesterone go to a doctor if you can and if you can’t eat healthy as possible and get some progesterone natural cream. You can and more then likely will have a stroke if you let it go too long. I just thought I wasn’t woman enough to handle the changes when I was menstruating and never told anyone, don’t ever just think it’s normal and not ask. I am trying to fix it myself (I have no insurance) but who knows if it will work or not. My period starts tomorrow so we will see.
The second theory is similar and is known as "evolutionary neuroandrogenic (ENA) theory of male aggression".   Testosterone and other androgens have evolved to masculinize a brain in order to be competitive even to the point of risking harm to the person and others. By doing so, individuals with masculinized brains as a result of pre-natal and adult life testosterone and androgens enhance their resource acquiring abilities in order to survive, attract and copulate with mates as much as possible.  The masculinization of the brain is not just mediated by testosterone levels at the adult stage, but also testosterone exposure in the womb as a fetus. Higher pre-natal testosterone indicated by a low digit ratio as well as adult testosterone levels increased risk of fouls or aggression among male players in a soccer game.  Studies have also found higher pre-natal testosterone or lower digit ratio to be correlated with higher aggression in males.