LAUSR

OBJECTIVE To describe alcohol use, alcohol-related harm, and alcohol-related problems preoperatively and up to 8 years following metabolic and bariatric surgery (MBS) in adolescents. SUMMARY BACKGROUND DATA Risk for alcohol use and alcohol use disorders (AUD) increases post- Roux-en-Y gastric bypass (RYGB) and vertical sleeve gastrectomy (VSG) in adults. However, data are lacking in adolescents who undergo MBS. METHODS This study includes 217 adolescents (aged 13-19 y) enrolled in a 5-center prospective cohort study who underwent RYGB or VSG (2007-2011) and reported alcohol use preoperatively and annually postoperatively for up to 8 years. Time to elevated Alcohol Use Disorder Identification Test-Consumption (AUDIT-C) score, alcohol-related harm, and alcohol-related problems were analyzed with Kaplan-Meier estimates of cumulative incidence. RESULTS Preoperatively, median age was 17 years; median BMI was 51 kg/m2. Alcohol use frequency and average quantity of drinks per drinking day increased postoperatively (2% consumed alcohol 2-4 times/month 6 months versus 24% 8 years postoperatively, P<0.001; 2% consumed≥3 drinks per drinking day 6 months versus 35% 8 years postoperatively, P<0.001). Cumulative incidence of postoperative onset elevated AUDIT-C score, alcohol-related harm, and alcohol-related problems at year 8 were 45% (95% CI:37-53), 43% (95% CI:36-51), and 47% (95% CI:40-55), respectively. CONCLUSIONS Nearly half of those who underwent MBS as adolescents screened positively for AUD, symptoms of alcohol-related harm, or alcohol-related problems 8 years post-MBS, highlighting the risk for alcohol use and AUD after MBS in adolescents. AUD evaluation and treatment should be integrated into routine long-term care for adolescents undergoing MBS.Key Words.