Bisphenol A, or BPA, is used in a wide variety of consumer products, including some hard plastic bottles and metal food or beverage cans.
Scientists have been concerned that BPA exposure might harm the reproductive and nervous systems, and possibly promote prostate and breast cancers.
But the lead author of the latest study says consumers shouldn't be alarmed by the findings. He says the 164 Chinese factory workers studied experienced BPA levels about 50 times higher than those faced by typical American men.
The study is being published online Wednesday in the journal "Human Reproduction".
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