Tuesday, May 25, 2010

Your sperm is safe

One of the biggest concerns surrounding BPA is that it is a known endocrine disruptor (ED) and acts as both an estrogenic and anti-androgenic agent. Now for us macho men this can mean some pretty bad things. For example, based on occupational exposure levels of BPA, factory workers with increased exposure were found to have a lower sex drive and higher rates of erectile dysfunction (the other-ED). The levels of exposure faced by these workers though were much higher than anything we would come across on a daily basis. But we are still constantly exposed to BPA, with over 90% of the population having measurable BPA in their urine.

So how do these everyday levels correlate to sexual effects in a normal healthy male? A new study in EHP attempts to answer just that. By measuring BPA urinary concentrations, the researchers sought to see how they measured up with semen samples collected from 375 men. I quite enjoyed how they chose these participants. What better way to determine if you got a healthy reproductive system than if you just impregnated your partner. Internet high-five to all 375 of you.

So, to get to the answer of the original question, the researchers conclude:

“Our results suggest that, in fertile men, exposure to low environmental levels of BPA may be associated with a modest reduction in markers of free testosterone, but any effects on reproductive function are likely to be small, and of uncertain clinical significance.”

Whew, your sperm is safe. But still, that doesn’t mean you shouldn't limit your exposure to BPA since as its been shown again and again, BPA is toxic to humans.

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