ABSTRACT Objective: To evaluate the efficacy of radioactive iodine therapy and to identify determinants of treatment outcomes in young adults with Graves disease. Methods: This retrospective cohort study analyzed young adults with Graves disease who underwent radioactive iodine therapy at two tertiary medical centers in Southwest China. Patients were stratified into two groups based on therapy outcomes at 6 months post-radioactive iodine therapy: euthyroidism or hypothyroidism (therapy success) and persistent hyperthyroidism necessitating either a second radioactive iodine therapy or continuation […]