Professor John Aitken’s research has laid the foundations for our current understanding of oxidative stress in the pathophysiology of male infertility and shaped the techniques that are currently being used to diagnose and address this condition. He has also pioneered the use of mass spectrometry to create the first definitive proteomic inventories of spermatozoa, creating databases that are now being used by gamete biologists all over the world. He has published >500 articles, which have been cited >25,000 times, generating an h-index of 85. In recognition of his services to science John was named as the NSW Scientist-of-the-year in 2012.