A Healthcare System's Path to Carbon Neutrality: Addressing Climate Change and Role of the Health Care.

Introduction: Anthropogenic climate change, according to the WHO, results in approximately 150,000 deaths annually through mechanisms such as heat-related mortality, altered food production, and the spread of infectious diseases. With climate change predicted to cause over half a million climate-related deaths by 2050, healthcare systems, which contribute significantly to greenhouse gas emissions, must adopt roles in environmental stewardship. Methods: This descriptive case study details how Kaiser Permanente, a large nonprofit organization, became the first carbon-neutral healthcare system in the country. Results: Kaiser Permanente has demonstrated environmental stewardship through initiatives such as an on-site solar program, sustainability scorecards for suppliers, and extensive partnerships with organizations to support community health and environmental building efforts. Initiatives included scaling renewable energy usage, constructing Leadership in Energy and Environmental Design-certified facilities, and reducing water use intensity led to Kaiser Permanente being the first carbon-neutral health system in the country. Conclusions: The WHO has declared climate change as the most significant threat to human health. Kaiser Permanente's journey to carbon neutrality highlights the critical role healthcare systems play in environmental stewardship. Continued focus on climate initiatives by the healthcare sector is essential to address the growing health impacts of climate change. Kaiser Permanente's efforts provide a real-life and practical framework for achieving significant positive climate effects.