Previous articles (5/5/211, 12/19/2012 and 1/24’2013) were about the health hazard from Bisphenol-A, and how we are exposed. Those article described the controversary about health risks from BPA, its presence in paper receipts, and its disguised replacement, BPS. It’s time for an update.
First a reminder that BPA is a hormone mimic, and therefore can activate some hormone receptor sites on cells. Measurements of BPA in urine have disclosed levels of 2 to 10 ppb, higher than levels of many natural hormones in the blood. (BPA is readily removed from the blood and excreted in the urine. The fact that it is usually found in the urine indicates rather continuous exposure to it.) Following are highlights from recent articles.
- California became the latest state to declare BPA a reproductive toxicant.
- BPA was detected in fetal liver samples from first- and second trimester terminated pregnancies. More importantly, 80 percent of the BPA was the more active type (free-BPA), higher than the 10 to 20 percent of active type in adult blood or urine.
- Researchers evaluated the relationship between levels of BPA in urine with adipose fat, cholesterol, insulin and glucose in 3400 children, ages 6 to18. They found that higher levels of BPA were associated with increased risk of obesity.
- A research group at Tufts University studied prenatal exposure in rats to subsequent occurrence of mammary tumors in the offspring. They found mammary gland tumors in six female offspring that had been exposed perinatally.
- The Breast Cancer Fund issued a report, Disrupted Development: The Danger of Prenatal BPA Exposure. The report stated, “Not only are fetuses exposed to BPA from the mother, the younger they are, the less able they are to eliminate it rapidly. In other words, the time period when the most rapid development is occurring is also the times when the most exposure is likely happening…The largest source of BPA (directly to infants) is from canned foods.”
A closing note: Avoid buying prepared baby food in cans – buy it in glass containers. Minimize handling of paper ATM and cash register and credit card receipts. Pregnant women especially should take these precautions.