Air Pollution and the Pathogenesis of Cardiovascular Disease

Cardiovascular diseaseCardiovascular diseases is significantly influenced by the inhalation of fine particulate matterParticulate matter (PM2.5), which is generated through the combustion of fossil fuels. Exposure to PM2.5 has been associated with elevated blood pressureBlood pressure, blood clot formation, and reduced insulin sensitivity. Additionally, it causes damage to blood vessels and speeds up the development of atherosclerosisAtherosclerosis. Animal modelsAnimal model’ findings support epidemiological evidence and indicate that the cardiovascular impactsCardiovascular impact of PM2.5 may be partially caused by oxidative stressOxidative stress, inflammationInflammation, and the activation of the autonomic nervous system. Despite the lack of clear understanding regarding the exact mechanisms involved, there is strong evidence indicating that prolonged exposure to PM2.5 is linked to premature death caused by heart failureHeart failure, strokeStroke, and ischemic heart diseaseIschemic heart disease. PM2.5 air pollution, consisting of fine particles with a diameter less than 2.5 μm, is the primary environmental risk factorEnvironmental risk factors that significantly contributes to cardiovascular mortality and disability on a global scale. Temporary increases in PM2.5 levels leadLead to a 1–3% higher likelihood of experiencing acute cardiovascular events within a few days. Prolonged exposures over multiple years significantly amplify this risk by approximately 10%, primarily due to the emergence of cardiometabolic disorders such as hypertensionHypertension and diabetes mellitus. Hence, ambient PM2.5 presents a significant peril to worldwide public health. Air pollutionAir pollution is a diverse and intricate combination of gasses, liquids, and tiny particles. Epidemiological studies have consistently shown that exposure to current levels of ambient particulate matterParticulate matter, both in the short and long term, is associated with an elevated risk of cardiovascular events. Various plausible mechanistic pathways have been elucidated, encompassing augmented coagulationCoagulation/thrombosisThrombosis, a predisposition for arrhythmiasArrhythmia, sudden narrowing of arteries, systemic inflammatory reactions, and the persistent promotion of atherosclerosisAtherosclerosis. In this chapter, we thoroughly and critically examined the existing information in the literature concerning the relationship between air pollution and cardiovascular diseaseCardiovascular diseases and offer future directions.