BPA Triggers Changes in Rats That May Lead to Breast Cancer

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'New research suggests that the chemical BPA changes how genes function in the mammary glands of rats exposed in their mother's womb, leaving them more vulnerable to breast cancer later in life. The study is the first to examine what impact fetal exposure to bisphenol A has on the DNA of mammary glands as they age. The researchers said their findings indicate that exposure to low amounts of the ubiquitous chemical, which mimics estrogen, might cause permanent changes in gene activity that lead to breast cancer.  
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