Marcos Staak Jr

Dr. Marcos Staak Jr is a Brazilian medical doctor specializing in harm reduction for anabolic-androgenic steroid (EAA) users. He publishes detailed educational content on Instagram, analyzing clinical cases, recent medical research, and practical guidelines for monitoring cardiovascular, hormonal, and reproductive health in steroid users. His posts frequently cite scientific studies, emphasize evidence-based practice, and promote his physical book compendium for healthcare professionals. He offers remote consultations globally and runs a professional training program for doctors.