Dr Leach is a Research Fellow with the Australian Research Centre in Complementary & Integrative Medicine (ARCCIM), and a Visiting Fellow with University of Technology, Sydney (UTS). He is also a Registered nurse and naturopath. Dr Leach has made an original and significant contribution to the scholarship of complementary and alternative medicine since commencing his PhD ten years ago. He has published more than 68 refereed journal articles, four book chapters and a sole-authored textbook, and has attracted over 900 citations for his work. Dr Leach is also a member of several journal editorial boards and government committees, and has been awarded numerous competitive research grants totalling more than $940,000.