Secondary sexual characteristics are the set of anatomical structures and features unique to males and females that are not directly related (and therefore secondary) to the production of sex cells (gametes). Although in humans, the differences in male...

Secondary sex characteristics are traits that distinguish the two sexes of a species, but that are not directly part of the reproductive system. They are believed to have evolved to give an individual an advantage over its rivals in courtship. They are...

An inmate who castrated herself with a disposable razor blade after prison officials refused to treat her for gender identity disorder should have female hormone therapy paid for by the state, a federal judge said.Jenniffer Spencer, who was born biologically male, sued the Idaho Department...