"Prenatal BPA Exposures (Don’t) Affect Birth Weight," By Steve Hentges. Recent media stories have reported on two new scientific studies involving BPA’s effects on birth weight. One study reported a statistical association between prenatal exposure to BPA and increased birth weight, while the other reported an association with decreased birth weight. However, both of the new studies use cross-sectional study designs that are inherently incapable of providing much meaningful information on … [Read more...]