Dr Cybele Dey is passionate about finding solutions and improving responses to the impacts of climate change on child and adolescent mental health. She is a conjoint lecturer and researcher at the University of New South Wales and part of the Kids Mental Health Research group at Sydney Children's Hospitals' Network.

Dr Dey's research investigates using systems models to understand the mental health impacts of climate change such as from extreme weather, heat, physical illness, flow-on effects such as disruptions to schools and the effects of awareness of climate change. Dr Dey's research focuses on how to protect and improve child mental health in the face of the impacts of climate change. She is very grateful to learn from and alongside First Nations' knowledge and culture bearers, people with lived experience and with colleagues across different disciplines.

Dr Dey is a Child and Adolescent Psychiatrist who works at The Sydney Children’s Hospital Network, Australia, both locally and via telehealth to rural and remote areas of NSW. Dr Dey is dual qualified as a Paediatrician. She has worked as a doctor in child and adolescent psychiatry for over 20 years, becoming involved in research and advocacy on planetary health and mental health from 2020 onwards.

She is a member of Doctors for the Environment, Australia, and chair of the DEA Mental Health Special Interest Group and chair of the Climate Psychiatry Group of the NSW Royal Australian and New Zealand College of Psychiatrists.