In a nutshell, BPA is a potentially harmful ingredient that is in plastic. What is fuzzy is just what kind of plastic does it include? Bisphenol A (BPA) is a high production-volume chemical commonly used in the manufacture of polycarbonate plastic. Low-level concentrations of BPA in animals and possibly in humans may cause endocrine disruption. Whether ingestion of food or beverages from polycarbonate containers increases BPA concentrations in humans has not been studied. (source: http://www.ehponline.org) This conversation on Facebook started with my comment and link to another article detailing a bit of an update on the state of outlawing BPA in baby bottles. (here) My friend, Andrea Paulinelli of Eco…