Bisphenol A Study Hints at Breast Cancer Link

In an article published today by the San Francisco Chronicle, a new study suggests that bisphenol A has impacted the development of mammary glands in monkeys. The study found that monkeys fed a piece of fruit contaminated with bisphenol-A each day during their third trimester of pregnancy had female offspring which developed dense tissue, which in humans often leads to breast cancer. The article says:

'For this study, the researchers fed pregnant rhesus macaques a piece of fruit containing BPA every day during their third trimester of pregnancy. The monkeys' blood levels of BPA reached about the average level that BPA has been observed in human blood in the United States, said Patricia Hunt, a geneticist at Washington State University and one of the study's authors.

After female offspring of these BPA-exposed monkeys were born, the researchers looked at their mammary glands. They found changes in the glands that give rise to dense tissue - something that in humans is a risk factor for breast cancer, Hunt said.

Earlier studies by Ana Soto and Carlos Sonnenschein, also authors of the new study, found that exposing rodents to small amounts of BPA could change their mammary gland development and lead to precancerous and cancerous lesions when the animals exposed as fetuses became adults.

"We think that our results suggest that it is very likely that fetal exposure to BPA would also increase the propensity to develop mammary cancer in monkeys," Soto said.'

To learn more about the study and its reception, see the full article on the San Francisco Chronicle.

Photo Credit: mape_s on Flickr.


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