A 16 year-old male came to your office for the evaluation of a rash on his back and an abscess on his right thigh. He is also feeling frustrated, irritable and lost interest in activities he once enjoyed. His vital signs were Temp = 98.2 F, Blood pressure = 150/90 mm Hg, Pulse = 95/minute, RR = 24/minute. In the physical examination, you noticed severe acne on his face, several pustules of hair follicles on his back and a 5 cm by 5 cm size abscess with surrounding erythema on the lateral surface of right thigh. There is tenderness to palpation in the right upper quadrant. On further questioning, the patient admits that he takes some oral and injection steroid supplements to increase his muscle mass and ‘sexual energy’. He would like to build his body like his favorite movie star. Regarding his use of performance-enhancing steroids, which of the following is the best advice you can give to this patient?