Swiss researchers examining exposure pathways for a common chemical used in plastic containers and linings of cans find infants have the highest estimated levels of Bisphenol A (BPA), with exposures falling with rising age. While estimated levels are well below the Tolerable Daily Intake (TDI) set by European authorities, the findings are important in that BPA is thought to impact human development and is classified as an endocrine disrupting chemical, potentially putting developing infants at risk, as well as fetuses if pregnant mothers are exposed.