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Delhi's Air Pollution Poses Hidden Health Crisis, Warns Former AIIMS Chief

Prolonged exposure to Delhi's polluted air significantly increases the risk of lung cancer and other serious illnesses, according to a former chief of the All India Institute of Medical Sciences. The phenomenon represents a largely unrecognized public health emergency affecting millions of residents.

LSN India · 6 November 2026

Delhi's deteriorating air quality is operating as a "silent epidemic," exposing millions of residents to long-term health risks that extend far beyond respiratory discomfort, medical experts warn. Dr. Guleria, former chief of AIIMS Delhi, highlighted growing evidence from India and international research showing that prolonged exposure to polluted air substantially elevates the risk of lung cancer development.

The mechanism behind this health threat is concerning: toxic air pollutants expose lung tissue to cellular mutations over time, gradually increasing cancer risk among long-term residents. This process occurs insidiously, often without obvious symptoms until advanced disease develops, making it a public health challenge that operates largely outside public awareness.

Research from both Indian and international institutions has documented the correlation between chronic air pollution exposure and malignant lung diseases. The evidence suggests that individuals living in severely polluted environments face cumulative health damage proportional to their duration and intensity of exposure.

The warning comes amid ongoing concerns about Delhi's air quality, which frequently deteriorates during winter months when pollution levels spike to hazardous levels. Health professionals are increasingly calling for sustained public health interventions and policy measures to address what they describe as a pressing but under-recognized epidemic affecting urban populations across India's major cities.