In my book on toxic chemicals, I wrote about the health effects of Bisphenol-A (BPA) as being pervasive: this chemical compound, found in plastics and even in some cash register receipts, has been linked to problems with metabolism, behavior, reproduction, the development of placentas and stem cells, and the growth of cancerous tumors. BPA has been blamed (at least in part) for obesity, diabetes, asthma, infertility, and even…