A new Indian review reveals strong links between air pollution and heart disease, hypertension and stroke, urging urgent public health action and cleaner air policies.
Air pollution is emerging as a major and underrecognized contributor to cardiovascular disease in India, according to a new systematic review published in the international journal Cardiology in Review. The study was led by Aditya Bhakta Saran, MBBS, from Hinduhridaysamrat Balasaheb Thackeray Medical College and Dr. R. N. Cooper Municipal General Hospital, Mumbai, and brings together evidence from nearly two decades of Indian research.
The review analyzed 18 studies conducted across different regions of India to assess the impact of both ambient (outdoor) and household (indoor) air pollution on cardiovascular health. The findings suggest that prolonged exposure to polluted air is associated with a wide range of heart-related conditions, including hypertension, ischemic heart disease, stroke, and early vascular damage.
One of the most consistent findings of the review was the link between fine particulate matter (PM2.5) and raised blood pressure. Several studies included in the analysis reported that even modest increases in PM2.5 levels were associated with measurable rises in systolic and diastolic blood pressure. On a population level, such changes significantly increase the risk of developing hypertension, a leading cause of heart attacks and strokes in India.
Beyond blood pressure, the review found growing evidence that long-term exposure to pollutants such as nitrogen dioxide and sulfur dioxide may contribute to ischemic heart disease and thrombotic events. Studies from highly polluted urban areas like Delhi showed signs of increased clotting tendency and inflammatory changes among exposed populations, pointing toward biological mechanisms that raise the risk of heart attacks.
Household air pollution emerged as a particularly serious concern. Millions of Indian households still rely on biomass fuels such as wood, dung, and crop residues for cooking. The review highlights that women exposed to biomass smoke—especially in rural settings—face higher rates of hypertension, vascular inflammation, and early atherosclerotic changes. Pregnant women exposed to household air pollution were also found to have higher blood pressure and increased risk of hypertensive complications.
Importantly, the review emphasizes that air pollution does not affect all populations equally. Women, rural residents, and individuals with existing cardiometabolic risk factors appear to be more vulnerable. The findings also suggest that long-term exposure has a stronger cardiovascular impact than short-term exposure, although even brief pollution spikes were linked to increased hospital visits for cardiovascular conditions.
Despite India carrying one of the highest global burdens of air pollution, the authors note a striking lack of large-scale, long-term Indian studies focused specifically on cardiovascular outcomes. Most existing evidence comes from cross-sectional or short-term studies, underscoring the urgent need for robust cohort research tailored to Indian populations.
The study calls for immediate public health action, stressing that air pollution should be recognized as a modifiable cardiovascular risk factor—similar to smoking, obesity, or physical inactivity. The authors highlight that policy measures such as stricter emission controls, reduction in crop residue burning, cleaner household cooking fuels, and improved urban planning could have substantial benefits for heart health.
According to the review, addressing air pollution could play a critical role in slowing India’s rising epidemic of cardiovascular disease. The findings strengthen the case for integrating environmental exposure assessment into routine cardiovascular risk evaluation and for prioritizing air quality improvement as a key public health strategy.
ProtoRadNet, an explainable AI model developed at IISER Bhopal, can interpret MRI, CT and X ray scans like a radiologist. Built over 1.5 years and tested on public datasets with 92% accuracy and 190+ clinical reports, the system highlights suspicious regions and explains findings. This innovation could help address India’s radiologist shortage and improve diagnostic speed.
A first-of-its-kind genomic study from India has revealed that the Mpox case detected in Kerala was caused by the Clade Ib variant imported through international travel from Dubai. Genetic sequencing traced the virus’s journey into India, uncovered dangerous mutations, and warned that this evolving strain may spread faster and wider through sustained human transmission.
A major Indian Journal of Medical Research 2025 study reveals rising lung cancer incidence in India, sharp regional and gender disparities, increasing adenocarcinoma dominance, and worrying projections up to 2030.
