This article links to the United Nations Sustainable Development Goals (SDGs) by addressing Goal 3 (Good Health and Well-Being) and Goal 13 (Climate Action), as it highlights the significant greenhouse gas emissions associated with radiotherapy, a critical component of cancer treatment. By proposing strategies to reduce the environmental impact of oncology care through sustainable practices and treatment modifications, the study emphasizes the importance of integrating health care with climate action efforts to promote both patient well-being and environmental sustainability.