The Green Nephrology Action Team


GNAT … “a vector for change”

The Green Nephrology Action Team (GNAT) is a working group of the Australian and New Zealand Society of Nephrology (ANZSN). It has the tripartite support of:

The GNAT team draws representatives from the ANZSN, RSA, KHA, and consumer groups.


The GNAT Position Statement can be found at:


The core GNAT team includes:

  • A Prof Katherine Barraclough: Nephrologist, Royal Melbourne Hospital, Parkville, Victoria (GNAT Chair)
  • Prof John Agar: Nephrologist, University Hospital, Barwon Health, Geelong, Victoria
  • Prof John Knight: Nephrologist, George Institute, Sydney, New South Wales
  • Dr Matthew Sypek: Nephrologist, Royal Melbourne Hospital, Parkville, Victoria
  • Dr Leila Arnold: Nephrologist, Wellington Hospital, New Zealand
  • Mr Craig Sumpner-Johnston: Nurse Unit Manager, Mayo Private Hospital Dialysis Service, Taree, New South Wales
  • Ms Anthea White: Satellite Dialysis Manager, Coburg Dialysis Service, Coburg, Victoria
  • Dr Shlipa Jesudason: Medical Director KHA, Adelaide, South Australia
  • Dr Marie Ludlow: General Manager Clinical Directorate KHA, Adelaide, South Australia
  • Mr Greg Collette, haemodialysis patient and member of the KHA National Consumer Council


GNAT seeks to encourage ANZ renal services to be more critical of the resource and waste footprint they create and leave.

GNAT has already achieved prominence at the annual scientific meetings of the ANZSN and RSA.

GNAT has successfully secured funding for the ‘annual best environmental abstract‘ at both the ANZSN and RSA.


But beware … green enthusiasm and excitement can be infectious!!

As an example, read about the tiny outback community of Kiwirrkurra, where simple water recycling is helping to feed the township.



  • GNAT is indebted to Professor John Agar and Barwon Health Renal Services, Geelong, Australia, for permitting their original 2014 website – – to be adapted and re-shaped by the GNAT committee and acknowledges the pioneering role that single service team has played in nurturing Green Nephrology.
  • In addition and in turn, the Barwon Health team express their gratitude to Fresenius Medical Care (Australia) for providing the initial sponsorship seed funding that permitted the first iteration of this website to be built in 2004. The Fresenius logo appears in recognition of that funding assistance, and for no other purpose.
  • This website does not promote or recommend any specific company or product. Any product references are made and intended solely in the sustainability context in which they appear.