High levels of antibodies to NLGN4Y in mother’s of gay sons

Male homosexuality has been a long-standing mystery from an evolutionary perspective, one that has spurred many hypotheses.  Ray Blanchard and colleagues have extensively documented previously that the likelihood of homosexuality increases with a man's number of older brothers, and they have suggested that this might be explained by an immune response, but there was no […]

from The Evolution and Medicine Review http://ift.tt/2jb4jbY