Babies in the UK have been born using a modified IVF technique incorporating DNA from three individuals. This procedure, designed to prevent the transmission of inherited genetic diseases, utilizes genetic material from the mother's egg, the father's sperm, and a small mitochondrial contribution from a healthy female donor's egg. The method aims to ensure the child inherits the parents' primary genetic traits while avoiding the passing on of potentially debilitating mitochondrial disorders. This marks a significant advancement in reproductive technology and offers hope for families at risk of transmitting such conditions.