Louisa Degenhardt’s research on illicit drug use and its health effects has shaped policy at a global level via advice to WHO, UNAIDS, and UNODC. Her data linkage work on opioid dependence has been used internationally to evaluate the benefits risks of addiction treatment. She has published >370 peer reviewed papers, ~190 since 2010; 3 books, 39 book chapters, and 110 reports. Her H-index in Web of Science (WOS) is 48. She has worked on the WHO’s World Mental Health Surveys and co-chairs the Mental Disorders and Illicit Drug Use Expert Group for the 2010 Global Burden of Disease study.