Dr. Trevor Hancock

Founder, Canadian Coalition for Green Health Care

Dr. Trevor Hancock is a public health physician and health promotion consultant who has worked for local communities, municipal, provincial and national governments, health care organizations and the World Health Organization. The main focus of his work has been in the area of healthy cities and communities, an area he helped to pioneer.

He has been actively involved in the public health movement in Canada for many years, having been on the Board of Directors of the Ontario Public Health Association for a number of years, serving as President in 1986/7. Honours he has received include Honourary Life Membership in the Canadian Public Health Association (1990); Life Membership in the Ontario Public Health Association (1999); appointment as a Regents Lecturer at the School of Public Health, University of California at Berkeley (2000); the President’s Award, Public Health Association of BC (2004), and appointment as a Hallman Visiting Professor at the University of Waterloo (2008).

He has a longstanding interest in health and the environment, in the “conserver society” concept and the health and political implications of sustainable development. In 1989, he organized a national conference on health, environment and economy and continues to work to bring together the themes of health and sustainable development, particularly in the context of Healthy Cities, and more recently in the context of health hospitals. He is a founder of the Canadian Association of Physicians for the Environment and chaired the Board from 1993 – 2003.

In recent years his views on the place of hospitals in their community and their role with respect to health promotion and healthy communities have led to consulting work with hospitals and to a number of articles and speeches on the topic. He is a founder of the Canadian Coalition for Green Health Care and in 2001 authored a major report on environmentally responsible health care in Canada. He has spoken and written extensively on the issue of Green Health Care, including a column for Health Care Quarterly from 2001 – 2005. Dr. Hancock is currently a Population and Public Health Consultant at the Ministry of Health in British Columbia.

Myles Sergeant – Medical Advisor

Dr. Myles Sergeant is a family physician who has worked with vulnerable populations, including new immigrants and refugees, people experiencing homelessness and/or addictions, and the elderly, over the past 25 years.

Recognizing the intersection between environmental issues and health, he is dedicated to addressing climate change issues and has co- founded Partnerships for Environmental Action by Clinicians and Communities for Health care facilities (, the charity Trees for Hamilton in 2012 (,  and the not-for-profit Shelter Health Network in 2005 (

Myles can be reached at

Dr. Jean Zigby

Founding President, Synergie Santé Environment

Jean Zigby is a family physician and palliative care specialist practicing in Montreal. He is a husband and father of two, and began researching the environmental impacts of healthcare in 2002 when he became affected by the magnitude of waste he saw in his workplace. Currently the President of the Canadian Association of Physicians for the Environment, he is the founding president of Synergie Santé Environment, a not-for-profit organization dedicated to reducing Quebec’s healthcare eco-impact.



In Honour

Dr. Lynn Marshall

1942 – 2022

Lynn was the President and Chair of the Board of the Environmental Health Institute of Canada (EHI-Canada), a charitable organization that is a founding partner in the Canadian Coalition for Green Health Care (CCGHC), where Lynn served on the Stewardship Council. Lynn was  aMedical Education Liaison/Staff Physician of the University of Toronto-affiliated provincial Environmental Health Clinic at Women’s College Hospital, Toronto, and a member of the Environmental Health Committee of the Ontario College of Family Physicians, both also founding CCGHC partners.

Besides an M.D. from Queen’s University, Lynn has earned a Fellowship in the American Academy of Environmental Medicine, and has been elected a Fellow of the Royal Society of Medicine in Great Britain. She was a faculty member of the University of Toronto and the Northern Ontario School of Medicine, Lakehead and Laurentian Universities, where she taught medical students, graduate physicians, and public health professionals. She was also involved in health promotion with the Canadian Partnership for Children’s Health and the Environment and several other professional and patient support organizations.

Lynn was one of the first physicians to engage with the fledgling Canadian Coalition for Green Health Care as a medical advisor, back when few others had recognized the importance of a sustainable health system and a healthy planet for all.

In addition to Lynn’s 55-year career in family medicine, environmental health, occupational medicine, psychotherapy/hypnotherapy and epidemiological research, she always found time to support Coalition initiatives, lend a hand to usher in new converts to the world of environmental stewardship, and coach us on how to better achieve our common goals.