Testosterone has been crowned the king of hormones, estrogen the queen, and DHEA the mother to them both.  However, all humans have the same hormones present in varying amounts that determine our female or male characteristics.  Hormones can determine what the brain is interested in doing.  This is why when the sex hormones are low, your sex drive is low.  When the bonding and cuddling hormones are high (oxytocin and ...