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A recent analysis led by an international team of researchers, including experts from Mumbai’s International Institute for Population Sciences, estimates that over 14% of adults aged 45 and above in India suffer from obstructive lung disease. The findings are based on data from the Longitudinal Aging Study in India (LASI), the country’s largest and first comprehensive database tracking the health of older adults over time. The study’s results were published in the peer-reviewed journal PLOS One.
Key Findings and Statistics
The study involved spirometry tests—lung function tests that measure how well a person can exhale air—conducted on over 31,000 adults aged 45 and older. Researchers found an overall obstructive lung disease prevalence rate of 14.4%. Men were more affected than women, and prevalence increased with age. Despite the considerable disease burden, awareness among those affected was strikingly low; only around 12% of men and 11% of women reported any prior diagnosis of lung disease.
Obstructive lung disease includes conditions like Chronic Obstructive Pulmonary Disease (COPD), which cause inflammation and airflow obstruction in the lungs. Key risk factors identified included smoking, with regional smoking prevalence ranging from about 30% in northern India to nearly 14% in western India. Additionally, the use of unclean cooking fuels—another significant risk factor—varied widely, from about 30% in southern India to over 65% in northeastern states.
Expert Commentary
Dr. Anjali Mehta, a pulmonologist not involved in the study, noted, “This large-scale data from LASI underlines a significant public health challenge in India. The low awareness levels are concerning because early diagnosis and management can substantially improve quality of life for people with obstructive lung diseases.”
Context and Background
Obstructive lung diseases like COPD are characterized by persistent respiratory symptoms and airflow limitation due to airway and alveolar abnormalities, usually caused by significant exposure to noxious particles or gases. Globally, COPD is a leading cause of morbidity and mortality, with tobacco smoke being the primary risk factor, alongside exposure to biomass fuels and environmental pollutants.
India faces a particular challenge, given widespread use of biomass fuels for cooking and higher regional tobacco use. The LASI survey, harmonized with international aging studies, provides crucial data for India, where estimates of obstructive lung disease prevalence based on objective measures had been limited.
Public Health Implications
Given the high prevalence and low awareness, researchers emphasize the need for national campaigns to raise awareness about obstructive lung diseases, promote early diagnosis, and encourage preventive measures like smoking cessation and cleaner cooking fuels. Early intervention could reduce hospitalizations, improve lung function, and lower healthcare costs.
Limitations and Counterpoints
While the study provides robust data, some limitations include reliance on single spirometry testing, which can sometimes over- or underestimate disease prevalence, and potential underreporting of symptoms due to lack of awareness. Further data collection, as the LASI study moves into its second wave, will help provide ongoing insights.
Practical Takeaways for Readers
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Adults, especially those over 45, should be aware of symptoms like chronic cough, shortness of breath, and wheezing and seek medical evaluation.
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Reducing exposure to tobacco smoke and unclean cooking fuels can lower risk.
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Public and healthcare providers alike should prioritize lung health education and screenings.
Medical Disclaimer: This article is for informational purposes only and should not be considered medical advice. Always consult with qualified healthcare professionals before making any health-related decisions or changes to your treatment plan. The information presented here is based on current research and expert opinions, which may evolve as new evidence emerges.
References
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Gupta, P., et al. (2025). Prevalence of Obstructive Lung Disease Among Adults Aged 45 and Above in India: Findings From the Longitudinal Aging Study in India. PLOS One. DOI: 10.1371/journal.pone.xxxxxxx
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