Buying Local and Organic? You’re Still Eating Plastic Chemicals
” A team led by Sheela Sathyanarayana of University of Washington’s Seattle Children’s Research Institute performed a “dietary intervention” on two sets of five local families… …using urine tests to establish baseline BPA and phthalate levels for each group… ”
” The lesson is that you can try to reduce exposure, but there are unknown sources of phthalates that could be very large lurking in the food chain. ”
” These results add to a weight of evidence that should push the FDA to take action on the role of plastic conditioners in food processing and packaging. ”
Read Buying Local and Organic? You’re Still Eating Plastic Chemicals, MotherJones, MAR. 4, 2013.
BPA is a toxic chemical used in the lining of most food cans. Bisphenol-A is a synthetic estrogen like DES, linked to breast cancer, reproductive problems, obesity, ADHD, immune system harm and other serious health issues.
You can easily reduce your BPA exposure by avoiding consumption of canned foods that are acidic, salty or fatty, because BPA is more likely to leach from can linings into these kinds of foods.
Gestational exposure to bisphenol a produces transgenerational changes in behaviors and gene expression
Bisphenol-A BPA, DES and similar compounds are known as endocrine-disrupting chemicals, which are substances in the environment that interfere with the proper functioning of hormones.
Bisphenol A (BPA) is a plasticizer and an endocrine-disrupting chemical. It is present in a variety of products used daily including food containers, paper, and dental sealants and is now widely detected in human urine and blood. Exposure to BPA during development may affect brain organization and behavior, perhaps as a consequence of its actions as a steroid hormone agonist/antagonist and/or an epigenetic modifier. Here we show that BPA produces transgenerational alterations in genes and behavior. Female mice received phytoestrogen-free chow with or without BPA before mating and throughout gestation. Plasma levels of BPA in supplemented dams were in a range similar to those measured in humans. Juveniles in the first generation exposed to BPA in utero displayed fewer social interactions as compared with control mice, whereas in later generations (F(2) and F(4)), the effect of BPA was to increase these social interactions. Brains from embryos (embryonic d 18.5) exposed to BPA had lower gene transcript levels for several estrogen receptors, oxytocin, and vasopressin as compared with controls; decreased vasopressin mRNA persisted into the F(4) generation, at which time oxytocin was also reduced but only in males. Thus, exposure to a low dose of BPA, only during gestation, has immediate and long-lasting, transgenerational effects on mRNA in brain and social behaviors. Heritable effects of an endocrine-disrupting chemical have implications for complex neurological diseases and highlight the importance of considering gene-environment interactions in the etiology of complex disease.
Sources and more information
Gestational exposure to bisphenol a produces transgenerational changes in behaviors and gene expression, Endocrinology. 2012 Aug;153(8):3828-38. doi: 10.1210/en.2012-1195. PMID: 22707478 Epub 2012 Jun 15. Full text.
BPA Exposure Effects May Last for Generations, Endocrine Society, press-release-archives/2012.