Causes of transsexuality Docter and others, but opposed by Charles Allen Moser, Larry Nuttbrock, Julia Serano, and the World Professional Association for Transgender Health.<section end="factors" /> A 2008 study compared 112 male-to-female transsexuals (both androphilic and gynephilic), mostly already undergoing hormone treatment, with 258 cisgender male controls. Male-to-female transsexuals were more likely than cisgender males to have a longer version of a receptor gene (longer repetitions of the gene) for the sex hormone androgen or testosterone, which reduced its effectiveness at binding testosterone. The androgen receptor (NR3C4) is activated by the binding of testosterone or dihydrotestosterone, where it plays a critical role in
Causes of sexual violence more important than the physical surrounding. How deeply entrenched in a community beliefs in male superiority and male entitlement to sex are will greatly affect the likelihood of sexual violence taking place, as will the general tolerance in the community of sexual assault and the strength of sanctions, if any, against perpetrators. For instance, in some places, rape can even occur in public, with passersby refusing to intervene. Complaints of rape may also be treated leniently by the police, particularly if the assault is committed during a date or by the victim's husband. Women in various countries face serious risks