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.     
I have been suffering from acne since 3 years get major breakouts a few days before my periods(along the jawline,chin and cheeks). Redness and a zit here and there always stay throughout the month. I’m vegan and have a sound,hygienic eating and living habits, so i’m guessing its my hormones messing up. Before booking an appointment I think i need to get these hormones tested. Could you please suggest how many test reports over a period of a month would suffice to give a clear picture of how my hormones are working.
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