A new study shows that bisphenol A (BPA), a synthetic estrogen, creates higher risk of male sexual dysfunction at very high exposure levels.

The study, released by Human Reproduction on Nov. 10, builds on animal studies that suggest BPA in food containers such as bottled water and soda bottles is an endocrine disrupter.

In the study, investigators interviewed male workers in China who had been exposed to extremely high levels of BPA, 50 times higher than the average person. They discovered significantly higher risk of sexual dysfunction in the workers.

Whether this study is significant because of the high exposure level remains to be seen. In the meantime, the FDA is re-evaluating its prior judgment that BPA is safe to use in food containers such as bottles and as tin can liners. The FDA is expected to announce its determination at the end of the month.

The Environmental Working Group, which advocates for clean water and other topics, announced it is troubled by the study’s results because it indicates BPA affects not only children, but adults.

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