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BPA reduces Testosterone which Increases Obesity

Posted by jamesmhoward on 13 Jun 2013 at 11:46 GMT

Bisphenol A reduces testosterone levels (Fertil Steril. 2013: "Serum bisphenol-A concentration and sex hormone levels in men," Zhou, et al.) I submit that BPA also reduces testosterone in children.

I suggest a certain ratio of testosterone to dehydroepiandrosterone (DHEA) is necessary for optimal gene activity in all tissues, perhaps, especially, in metabolism. If BPA reduces testosterone, then young girls would be more vulnerable to the effects of BPA than young girls. (I explain the importance of this ratio of testosterone to DHEA in "DHEA, Estradiol, Testosterone, and the Relevance of Their Ratio …The Androgen Receptor …and the Secular Trend," at: .)

No competing interests declared.