BisPhenol-A...Again: It Stays Longer In Your Body Than Experts Once Thought
Figure 2: Adjusted urine BPA level vs. fasting time. Image credit:eponline.org, from work by Richard W. Stahlhut, Wade V. Welshons, and Shanna H. Swan
A research paper recently published in the peer-reviewed journal Environmental Health Perspectives points out that, traditionally, it was believed by experts, that human bisphenol-A exposure was almost exclusively from food. That belief had interesting implications for those choosing which type of water bottle to purchase, for example. The food-as-main-exposure notion is now being challenged. The authors of Bisphenol A Data in NHANES Suggest Longer Than Expected Half-Life, Substantial Non-Food Exposure, or Both report that:
Overall, BPA levels [in urine] did not decline rapidly with fasting time in this sample. This suggests substantial non-food exposure, accumulation in body tissues such as fat, or both.The slope of the Figure 2, taken from the full paper, and presented above, represents this observation.
The Milwaukee Journal Sentinal covers the BPA story here. A full copy of the research report is downloadable as a pdf file, here.
Selected TreeHugger archival coverage of the BPA issue.BPA Danger may be greater from Tin Cans than Water Bottles ...Wal-Mart Dumps BPA Bottles; More Studies Pan BPA Are Sigg Aluminum Bottles BPA Free?Don't Buy A Nalgene Water Bottle Until You Read ThisFDA Chair Studying BPA Took $5 Million Donation From BPA Supporter ...FDA Says BPA Is Safe For BabiesBilt Stainless Steel Water Bottles Avoid Toxic BPA
