... friends with someone to gain revenge on someone else or they exclude someone from their group or they try to disrupt other people's friendships. This can be observed from pre-school right through to adulthood. Young girls are constantly changing their best friends or 'falling out' with one of their classmates. This aggression seems to be part of a female's behaviour as nearly every female can honestly say that they have taken part or been the victim of this kind of aggression. But, there are some women who take part in physical aggression. Could this be down to raised levels of androgens within their bodies? Androgens are basically masculizing hormones. For example, testosterone, 5alpha-dihydrotestosterone and cortisol, to name but a few. Androgens occur within the female body naturally, but there are about a tenth less than in the male body. Testosterone is produced in the body through some bodily processes, both in ...

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