The British Journal of Psychiatry 131: 73-74 (1977)
© 1977 The Royal College of Psychiatrists
A study of consanguinity between the parents of transsexuals
J Walinder and I Thuwe
During recent years there have been published a number of reports of more
than one case of transsexualism or other sexual pathology occurring within
the same family. As long as the aetiology of transsexualism remains unknown
the authors consider that a possible effect of recessive genes cannot be
definitely excluded. To ascertain whether transsexual patients are born of
cousin marriages to a greater extent than expected the authors have fully
investigated family relationships for 61 known cases of transsexualism. No
case of cousin marriage was disclosed.