During the production of polycarbonate plastic or epoxy resins, the BPA molecules are firmly bound, interlinked with each other and incorporated into the polymeric structure of the plastic itself. Like with any other material, there is some potential for extremely small amounts of BPA to migrate. However, numerous studies show that the level of migration is far below any safety-based standards set by government bodies such as the European Food Safety Authority (EFSA) or the U.S. Food and Drug Administration (FDA), and such exposure poses no known health risk.
In its recent safety assessment of BPA published January 2015, EFSA applied a comprehensive weight-of-evidence approach to all relevant studies on BPA, covering exposure from food sources along with exposure from a range of other potential sources, and considering all age groups of the population, „The overall conclusion [of EFSA] is that BPA poses no risk to human health from foodstuffs because current levels of exposure are well below the t-TDI of 4 μg/kg of bw/day. This also applies to pregnant women and to the elderly.” In fact, after exposure to BPA the human body rapidly metabolises and eliminates the substance from the body via the urine – this is also true for newborns and small children.