This research paper looks at how microRNAs (miRNAs), tiny molecules that help control how genes work, could be used as biological markers to detect when a baby has been exposed to alcohol before birth. This matters because prenatal alcohol exposure can cause Fetal Alcohol Spectrum Disorder (FASD), which affects how a child’s body and brain develop. FASD can lead to lifelong challenges with learning, behaviour, and health.
Right now, it’s very hard to identify babies affected by alcohol exposure early in life, especially when they don’t show the sentinel facial features linked with FASD. The researchers reviewed studies involving both humans and animals to see whether specific microRNAs found in a mother’s blood or a baby’s brain could act as early warning signs of alcohol exposure during pregnancy.
They found that eight microRNAs, including miR-9-5p and miR-132-3p, showed changes in women who consumed alcohol while pregnant, and similar patterns appeared in animal studies. These molecules may eventually help health professionals identify affected infants earlier, allowing support and interventions to begin sooner. The review also noted that nutritional supports, like choline or folate supplements, might help reduce some of the harmful effects of alcohol exposure.