Call to action: climate change and health threats to the Pacific Islands

The health impacts of climate change are increasingly evident in Pacific Island Countries and Territories (PICTs), a group of 22 nations facing significant and existential threats to their populations. This paper investigates the ways in which climate change exacerbates existing health issues in this vulnerable region, focusing on both communicable and non-communicable diseases, and the dynamic relationship between human and planetary health. Rapid urbanization, changes in food systems, and the ongoing epidemiological transition from infectious to chronic diseases reflect the complex interplay of colonization, globalization, and a changing climate. This paper reviews the unique climate challenges faced by PICTs, including rising sea levels, extreme weather events, and their impacts on food security, water resources, and healthcare. We explore the environmental and social determinants of health while highlighting how climate-induced changes compromise the health and well-being of communities throughout the Pacific region. We discuss the increasing prevalence of vector-borne and waterborne diseases, the exacerbation of the region's immense noncommunicable disease burden, and the profound mental health impacts of climate change. The economic implications of these changes, particularly on tourism and fisheries, are also explored. Despite these challenges, PICTs have demonstrated remarkable resilience and remain at the forefront of global climate advocacy. This analysis underscores the urgent need for international solidarity and action to address climate change and protect the health and well-being of the vulnerable Pacific region.