Dr. Oliver Gralla is a well-known German urologist and specialist in men’s health. Following a year of research at Harvard University, he began his career at in Berlin’s Charité teaching hospital, earning himself the nickname “The Stork of Berlin” for his work with men facing infertility. He then moved to Cologne—where he was greeted with a full-spread newspaper interview that called him “Dr. Sex”—to manage the men’s health center at University Clinic, and is now in private practice there.