A new study from Mater Research, based at Brisbane’s Translational Research Institute (TRI), has found that alcohol consumption around the time of conception can damage placental growth, potentially affecting a baby’s development. The study, involving over 400 Australian women, showed that those who consumed alcohol near conception were nine times more likely to have placental function issues, based on doppler ultrasound measurements, compared to those who did not drink alcohol. Dr Sarah Steane, leading the research, emphasized that even drinking prior to recognizing pregnancy can have measurable effects on placental health.

The findings also pointed to a possible protective role of micronutrients. Women who took the recommended amount of folic acid before and during early pregnancy were less likely to have abnormal ultrasound measurements. Additionally, the study highlighted the importance of choline, a nutrient found in protein-rich foods like eggs and red meat, which may work together with folate to reduce vulnerability to alcohol exposure. However, as Dr Steane noted, further research is needed to confirm how these nutrients interact to support placental development.

Professor Vicki Clifton, Group Leader of the Mater Research Pregnancy and Development Group, stressed that the main message is to avoid alcohol when planning pregnancy. However, for those who have unintentionally conceived after drinking, focusing on a diet rich in folate and choline is recommended. The ongoing Queensland Family Cohort Study will continue to explore the impact of alcohol and diet on pregnancy, and women less than 24 weeks pregnant are encouraged to participate.

More information can be found at www.qldfamilycohort.org (Australia, April 2025)