However, as emphasized in the conclusions drawn by both research teams, negative findings for low to moderate alcohol exposure should not be overinterpreted to represent a finding of no risk for this type of exposure. The data are clear that heavy prenatal alcohol exposure, and in particular binge drinking, pose substantial risks for alcohol-related problems, including cognitive and behavioral deficits.
Decades of research have also demonstrated that there is large variability in individual susceptibility to the effects of prenatal alcohol. In addition to the alcohol itself, alcohol metabolizing genotype, maternal age, socioeconomic status, nutrition, and other factors likely play a role in modifying or mediating the effects for the individual mother and her child.
Since obstetric providers and their patients cannot know who is most susceptible, the current CDC and Surgeon General’s recommendations are the most prudent.
Dr. Chambers is professor of pediatrics and director of clinical research at Rady Children’s Hospital, and associate director of the Clinical and Translational Research Institute at the University of California, San Diego. She is director of MotherToBaby California, past president of the Organization of Teratology Information Specialists, and past president of the Teratology Society. She has no relevant financial disclosures. To comment, e-mail her at obnews@frontlinemedcom.com.