(Editors’ Note: This guest editorial is written by anti-doping researcher, Dr. Paul Dimeo, Senior Lecturer, Faculty of Health Sciences and Sport at the University of Stirling, in the United Kingdom.) The world of anti doping in sport sometimes feels like a battle between opposing forces on the same side. The debate has become polarised between those advocating zero tolerance and those who want to accept performance enhancement as a reality to be managed. The latest leak claiming to reveal the banned substances cleared by sporting authorities for use on medical grounds by top athletes might offer us one route to a middle way in all this. Perhaps total transparency about these so-called therapeutic use exemptions (TUEs) might work? The past few months have witnessed a glut of scandals reminiscent of the crises of the 1990s that led to the creation of the World Anti Doping...