# Hormones

All time
Men's testosterone levels largely determined by their childhood environment, study finds
Serena Williams leads 'disappointed' reaction to Djokovic comments on women's tennis
Scientists harness hormones to create 'super-soldier' ants
Fatherhood causes drop in testosterone - and may keep men loyal
Scientists 'turned mice gay' through hormone immunity
Women believe deep-voiced men are more likely to cheat
China investigates dairy plans over 'baby breasts' allegations