A population-based registry study found that the increase in risk for a first onset of alcohol use disorder in a married individual after the onset of alcohol use disorder onset in his or her spouse was large and rapid. When an individual was married in either order to serial partners with vs. without alcohol use disorder, the risk for alcohol use disorder was substantially increased when the partner had an alcohol use disorder registration and decreased when the partner did not have an alcohol use disorder registration. What does this mean? A married individual’s risk for alcohol use disorder is likely directly and causally affected by the presence of alcohol use disorder in his or her spouse. Although spouses strongly resemble one another in their risk for alcohol use disorder (AUD), the causes of this association remain unclear. The study seems to conclude that the increase in risk for AUD registration...