Posttransplant diabetes is a common complication of solid-organ transplantation. We present the possible role of diabetes education in improvement of posttransplant diabetes in a 36-year-old bodybuilder who was a kidney transplant recipient. The patient had been abusing some medications to help in bodybuilding. He underwent living unrelated-donor renal transplant with thymoglobulin induction and was maintained on steroids, tacrolimus, and mycophenolate mofetil. Posttransplant diabetes was confirmed by blood tests. His blood sugar was partially controlled by 3 oral agents. The patient participated in our structured diabetes education program. This program was created to cover different items related to diabetes control, including diet, proper exercise, blood sugar monitoring, sick day management, and pathophysiologic roles of diabetes medications. Within 4 months of participation in this program, the patient's blood sugar became well controlled and his diabetes medications started to be minimized. He presently has stable graft function with hemoglobin A1c level around 5.6% on only diet management. Bodybuilders are at risk of deterioration of their kidney function. A proper diabetes education program is recommended to help renal transplant recipients with early posttransplant diabetes mellitus to control their disease. Success requires close evaluation and a multidisciplinary approach.