Research suggests that a parent's alcohol use disorder can have lasting effects on their children, potentially impacting them into adulthood. The extent of these effects is still being studied, with some findings indicating that there may be no safe limit for drinking around children and that a parent's alcohol consumption can affect their child's health, even before birth. Millions of children in the US are estimated to live with parents who have substance use disorders, with studies indicating that a significant portion of children may be affected.