The study (Abstract available at: http://www.fertstert.org/article/S0015-0282(10)02587-2/abstract) came from Kaiser Permanente and they summarized the following about the results:
"The five-year study recruited 514 workers in factories in China and compared workers who had high urine BPA levels with those with low urine BPA. Men with higher urine BPA levels had 2-4 times the risk of having poor semen quality, including low sperm concentration, low sperm vitality and motility.
"This study is the third in a series, published by Dr. De-Kun Li, a reproductive and perinatal epidemiologist at Kaiser Permanente's Division of Research in Oakland, Calif., and his colleagues, that examine the effect of BPA in humans. The first study, published in November 2009 in the Oxford Journals Human Reproduction, found that exposure to high levels of BPA in the workplace increases the risk of reduced sexual function in men. The second study, published in May 2010 in the Journal of Andrology, found that increasing BPA levels in urine are associated with worsening male sexual function." (Summary Available: http://www.eurekalert.org/pub_releases/2010-10/gi-etb102210.php)
But this chemical is not the only one causing issues with your endocrine system. Here's an excerpt from the upcoming book "Metabolic Health Transformation", where I discuss the concept that chemical exposure can negatively affect our hormone secreting endocrine glands as well as contribute to weight gain and obesity:
Your endocrine system is extremely sensitive to foreign chemicals, particularly newer manmade chemicals. These chemicals have been linked to a multitude of endocrine disorders such as diabetes, cardiovascular disease, thyroid disorders, sex hormone imbalances and gynecological issues, endocrine cancers, and even obesity. The chemicals that are related to obesity have been dubbed “obesogens” are being studied as key endocrine disruptor chemicals that are attributing to the obesity epidemic.