BPA in the news again


As bad as this stuff is, why is it still in production? More than 6 billion pounds of BPA are produced annually and there is now fairly definitive evidence that it not only affects babies in utero, but the quality and quantity of sperm in adult males.

There have been many studies regarding BPA, but in one of the first human studies researchers have found that high concentrations of BPA found in urinary samples may be related to decreased sperm quality and sperm concentration.

BPA is that pesky chemical that mimics the body’s hormones and leads to poor health, notably in pregnant women and their unborn children. BPA is used to make plastic and is found in food and beverage containers.

“Much of our focus for BPA is on the exposures in utero or in the early life, which is of course extremely important, but this suggests exposure may also be a concern for adults,” stated John Meeker, assistant professor Environmental Health Sciences at the University of Michigan School of Public Health and lead author of the study.

His team recruited men through a fertility clinic. They were asked to give urine and sperm samples on the same day. A subset of these men was asked to give additional samples in the following months. Researchers found BPA in 89% of the urine samples. “We found if we compare somebody in the top quartile of exposure with the lowest quartile of exposure, sperm concentration was on average about 23% lower in men with the highest BPA.” Meeker said. Findings also suggest a 10% increase in sperm DNA damage.

“The study from which these data came is currently in progress,” noted Russ Hauser, the Frederick Lee Hisaw Professor of Reproductive Physiology at Harvard School of Public Health and a co-author. “With a larger sample size and enhanced study design, we will be able to more definitively investigate this preliminary association in the near future.”

For now, clean out your cupboards and lose those plastic food containers.

Source: University of Michigan, ScienceDaily


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