Introduction and Objective: Little is known regarding cannabis (THC) and alcohol (EtOH) use in young adults with T1D.Methods: In this cross-sectional study, participants 18-26 years old with T1D in a pediatric clinic were asked study-designed questions to assess THC and EtOH use and knowledge of their glycemic impacts. Respondents were classified by THC and EtOH use categories. Active THC users (use in last 6 months) were given the Cannabis Use Disorder Identification Test-Revised (CUDIT-R) to evaluate hazardous use (score ≥ 8) and possible cannabis use disorder (score ≥ 12). Student’s t-test and chi-square tests were used.Results: Young adults (n=72) had a mean age 20.9 y (range 18.1-25.5 y). Half endorsed prior THC (n=36); 59.7% endorsed EtOH. Most began use before the legal age (21 y) (75% THC, 74.4% EtOH). THC and EtOH use were associated with each other (p=0.001). THC use was primarily recreational and was associated with lower TIR (p=0.036, Table). Of the 24 active THC users, CUDIT-R scores were ≥8 in 41.7% (n=10) and ≥12 in 16.7% (n=4). THC users were less likely to know THC’s impact on DKA risk (p=0.005, Table) and glycemic awareness (p=0.023) than non-users. EtOH users were more aware of its delayed hypoglycemic effect (p=0.027) than non-users.Conclusion: Substance use is common in young adults with T1D, but awareness of the glycemic impact is not. With increasing THC legalization, early additional patient education is needed.
L.A. Waterman: None. S. Polsky: Research Support; Dexcom, Inc., Hemsley Charitable Trust, National Institute of Diabetes and Digestive and Kidney Diseases, Juvenile Diabetes Research Foundation (JDRF). Consultant; Medtronic. B. Stewart: None. A.J. Karami: None. K. Taylor: None. E.C. Cobry: Advisory Panel; Dexcom, Inc.
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