An enlarged suprachiasmatic nucleus in homosexual men
I study medicine and found this pretty interesting for you guys
Morphometric analysis of the human hypothalamus revealed that the volume of the suprachiasmatic nucleus (SCN) in homosexual men is 1.7 times as large as that of a reference group of male subjects and contains 2.1 times as many cells. In another hypothalamic nucleus which is located in the immediate vicinity of the SCN, the sexually dimorphic nucleus (SDN), no such differences in either volume or cell number were found. The SDN data indicate the selectivity of the enlarged SCN in homosexual men, but do not support the hypothesis that homosexual men have a ‘female hypothalamus’.
I think this study is a few decades old…? It's been criticised for not being controlled well enough. It'd be interesting to see what a more definitive look at this reveals.
The broadly accepted view on the importance of the social environment on sexual differentiation has been extensively put into words by Simone de Beauvoir and others. It turns out, however, that sex differences revealed through play, drawings and aggression are determined by exposure to hormones in the womb rather than by what society demands later on.
I think this study is a few decades old…? It's been criticised for not being controlled well enough. It'd be interesting to see what a more definitive look at this reveals.
You know, I've always had several theories as to why this possibly was. On a larger scale, I find it see as one more ever-efficacious but rather indirect motif in male homosexuality. The only way I actually see homosexuality directly affecting the SCN would be via the audacious, unhinged lifestyles that many-a-gay man chooses to live... or I could be way off. Either way, that would make for a rather horrid generalization.
Can I get the 2nd grade summary? 
