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By comparing the testosterone levels of five-month old pairs of twins, both identical and non-identical, University of Montreal researchers were able to establish that testosterone levels in infancy are not inherited genetically but rather determined by environmental factors.

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JackinUncut Amateur Jackinchatter

196 posts since 2008-12-07
53 year old heterosexual from North West Georgia
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Thats pretty interesting. Does that correlate into older men? Our T. tends to drop, is that environmental or just getting older?
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