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Aspergers, Testosterone, and Physical Development

  • Thread starter PortraitOfTheAutist
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PortraitOfTheAutist

PortraitOfTheAutist

Greycel
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[font=Georgia,]Asperger's syndrome children are said to show higher levels of testosterone in the womb, and Aspergers and autism in general is characterized as a surplus of "male" genetic traits-- abnormally high interest in abstract thought, mathematics, individualism, etc, and by an abnormally low sense of empathy and social skills- the latter of which are generally considered "feminine" traits.[/font]
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[font=Georgia,]This got me to thinking how this tied in with WHR, or width-to-height ratio-- a measurement of male facial proportions that has been correlated with aggressiveness and dominance: [/font]
Under the influence of [testosterone during puberty), men's facial width increases in relation to height (width-height ratio or WHR), independent of body size. WHR is the distance measured from cheekbone to cheekbone versus the distance between the top of the lip and midbrow. A high WHR is 1.9 or above. Bill Clinton's is 2.07; John Edwards's, 2.38; and Richard Nixon's, 2.02; compared to John Lennon's, 1.63, and George Washington's, 1.65.


[font=Georgia,]Significantly, a male's face begins to widen with increased testosterone production during puberty; thus even "alpha" adult males would ostensibly appear no more "masculine" in youth than their beta counterparts; it is only manifested after the pubescent testosterone surge.[/font]
[font=Georgia,] [/font]
[font=Georgia,]I was thinking about how this relates to the Connecticut school shooter:[/font]
[font=Georgia,] [/font]
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HWu7H.jpg
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[font=Georgia,] [/font]
[font=Georgia,]Adam Lanza's face-- outlined in this pic by myself as per the methodology used in the Ontario study-- shows a facial width of 185 pixels versus a length of 130 pixels. That's a WHR of 1.42. The study indicated that the mean/median WHR was in the 1.75-1.8 range; a WHR greater than 1.9 was considered "high", so assuming a relatively standard distribution, ostensibly anything under 1.65 or so is "low". Lanza's WHR of 1.42 would thus seem to be extremely low for a male.[/font]
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[font=Georgia,]The theory I pose is this: since Aspergers children have such high testosterone from birth, is it possible that their bodies produce much less testosterone during puberty as a sort of negative compensation mechanism? We can perhaps infer that the most successul womanizers are born with average or even below average testosterone-- giving them the empathy, people skills, and ease in dealing with females from a young age-- and then experience a large testosterone surge during puberty, giving them the WHR that females covet as well as more dominant physical and behavioral characteristics.[/font]
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[font=Georgia,]Kids like Lanza would seem to get the worst of both worlds: their high testosterone in youth makes them ambivalent or uneasy around females, and after puberty they receive far less of the visible secondary sexual characteristics (perhaps including penis growth) while remaining "beta" behaviorally.[/font]

[font=Georgia,][size=small][font=Georgia,]Lanza also [/font][font=Georgia,]looked weird because he had a host of genetic problems. Pre-natal hormone levels are usually predictive of hormone levels in puberty for males -- look at digit ratios. Fat male babies, who were exposed to higher testosterone levels, lose their virginity early and have more sexual partners than skinny male babies.[/font]
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[font=Georgia,][size=small][font=Georgia,]A low WHR can also be the result of environmental factors, like chronic sinusitis. Mouth breathing causes the face (specifically lower jaw) to grow downwards, instead of forward and out, resulting in a face like Lanza's. It is called adenoid faces or long face syndrome.[/font]
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Estrogen is actually what masculinizes male brains. The conversion of testosterone to estrogen by aromatase in the brain results in the masculinization of neural circuits. So higher T prenatally, would result in higher levels of estrogen also? It is DHT that is responsible for male physical characteristics (look at 5ar deficient men) and estrogen results in male dimorphic behavior due to its interaction with testosterone? What do you think about this study?
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2851224/
>Male behaviors require both testosterone and estrogen. Circulating testosterone activates the androgen receptor (AR) and is also converted into estrogen in the brain via aromatase. This conversion is the primary source of estrogen to the male brain. It is unclear whether testosterone and estrogen signaling interact to masculinize neural circuits. Using a genetic approach, we show extensive sexual dimorphism in the number and projections of aromatase expressing neurons. The masculinization of these cells is independent of AR but can be induced by either testosterone or estrogen, indicating a role for aromatase in sexual differentiation of these neurons. We provide evidence suggesting that aromatase is also important in activating male aggression and urine marking as these behaviors can be elicited by testosterone in males mutant for AR. Taken together with additional findings, our results suggest that aromatization of testosterone into estrogen is important for the development and activation of neural circuits that control male territorial behaviors.


Autism also seems related to serotenergic function. This study basically shows that the antagonism of 5-Ht2cR can "increase social interaction and rescues social deficits caused by stress" in autistic mice. Interesting, because selective 5-Ht2cR antagonists increase testosterone and sexual receptivity in mice. Sorry if I'm hijacking your thread btw.
https://www.ncbi.nlm.nih.gov/pubmed/12097814
http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0136494
https://www.scripps.edu/news/press/2015/20150930page.html
>The development of social behavior is strongly influenced by the serotonin system. Serotonin 2c receptor (5-HT2cR) is particularly interesting in this context considering that pharmacological modulation of 5-HT2cR activity alters social interaction in adult rodents. However, the role of 5-HT2cR in the development of social behavior is unexplored. Here we address this using Htr2cknockout mice, which lack 5-HT2cR. We found that these animals exhibit social behavior deficits as adults but not as juveniles. Moreover, we found that the age of onset of these deficits displays similar timing as the onset of susceptibility to spontaneous death and audiogenic-seizures, consistent with the hypothesis that imbalanced excitation and inhibition (E/I) may contribute to social behavioral deficits. Given that autism spectrum disorder (ASD) features social behavioral deficits and is often co-morbid with epilepsy, and given that 5-HT2cR physically interacts with Pten, we tested whether a second site mutation in the ASD risk gene Pten can modify these phenotypes. The age of spontaneous death is accelerated in mice double mutant for Pten and Htr2c relative to single mutants. We hypothesized that pharmacological antagonism of 5-HT2cR activity in adult animals, which does not cause seizures, might modify social behavioral deficits in Pten haploinsufficient mice. SB 242084, a 5-HT2cR selective antagonist, can reverse the social behavior deficits observed in Ptenhaploinsufficient mice. Together, these results elucidate a role of 5-HT2cR in the modulation of social behavior and seizure susceptibility in the context of normal development and Ptenhaploinsufficiency.
 

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