[Impact of climate change and pollution on the global health of older adults].

Climate change and pollution are major public health challenges, with older adults particularly at risk due to frailty, multimorbidity, social isolation, and economic vulnerability. From a global health perspective, in which human health is closely linked to surrounding fauna, flora, and the broader environment, environmental exposures are key determinants of healthy ageing. We conducted a narrative review (2000-2025) based on PubMed, Google Scholar, and institutional reports (World Health Organization, IPCC, Inserm). The review focused on adults aged ≥ 60 years and the health impacts associated with soil, water, and air pollution, as well as climate change. A total of 44 sources were ultimately included. Findings indicate that soil and water contamination from pesticides are linked to increased risks of Parkinson's disease, neurocognitive decline, and cancer. Air pollution, including fine particulate matter and carbon monoxide, raises the incidence of chronic obstructive pulmonary disease, lung cancer, and pneumonia. Climate change contributes to cardiovascular and respiratory decompensations, infectious diseases, and undernutrition, further exacerbated by extreme weather events such as droughts, floods, and wildfires. These adverse outcomes are amplified by intrinsic factors (age, comorbidities, socioeconomic status) and extrinsic factors (housing, infrastructure, healthcare system). Protecting older adults from environmental threats should be recognized as a new cornerstone of geriatric care, requiring structural policies in urban planning and the integration of environmental health into healthcare professionals training.