omae mona wrote:From your message it almost sounded like you were attempting to measure people's testosterone levels just by looking at them!
So I'm sure after seeing those thorough articles you're not attempting to deduce testosterone levels via visual inspection of somebody's face and body, right? If that worked, why are all these researchers bothering with science?
Well, that is exactly what you can do in fact. People look different for a reason. Higher or lower dosages of testosterone and estrogen flooding the human body during puberty in both male and females leave their mark. These are extremely powerful hormones that change the body.
Females with lower levels of testosterone and correspondingly higher levels of estrogen end up with more feminine features such as a smaller lower half of their face. 'Thus, an attractive female face should look unmistakably female, which means it has been shaped by sufficient stores of estrogen, the principal hormone of female fertility. Estrogen is thought to help make the bottom half of the face narrower than the top half, for example, and to make the cheeks high and round'.
People with higher levels of testosterone get bigger jaws among other features. Same with hormonal indicators on the body. These are the reasons why males and females really start to diverge physically at puberty. This one is also interesting because it talks about behaviour and the hormonal link. 'Professor Allan Booth and Dr James Dabbs of Penn State University have even shown that, in a group of US air force servicemen, males with testosterone levels significantly above the average were 50% less likely to marry, which may suggest they have difficulty co-operating in a partnership with another individual'. I wouldn't be surprised if 'Jack' of FG fame had a blood testosterone level that is off the charts.

Ok, you wanted a link to the Japanese testosterone levels, I found this:
'Plasma levels of testosterone and estradiol were significantly lower in the Japanese men, when compared with those in Dutch men', and 'These differences were also found when results from Japanese subgroups (controls and patients with prostate pathology) were compared with those from the Dutch subgroups'.
'The finding of a lower plasma testosterone in the Japanese men, however, remains suggestive, warranting a more extensive prospective study'.
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