A recent study conducted by experts at the Karolinska Institutet in Sweden and published in The Lancet Planetary Health revealed the concerning effects of prolonged exposure and the rise in air pollution-linked deaths in India. The results highlight how urgently strict air quality laws are needed to safeguard public health and save lives.

The Devastating Impact of PM2.5 Pollution

According to the study, PM2.5 particles—tiny air pollutants with a diameter of less than 2.5 micrometers—can enter the bloodstream and lungs and cause serious health issues. The researchers examined data from 655 districts in India between 2009 and 2019 and connected rising mortality rates to elevated PM2.5 levels.

According to the study, a rise in air pollution-linked deaths was observed by 8.6% for every 10 microgrammes per cubic meter, an increase in PM2.5. It is concerning to note that during the study period, air pollution levels over India’s recommended 40 microgrammes per cubic meter were responsible for about 3.8 million deaths. The estimate rises to 16.6 million deaths, or over a quarter of all deaths during the decade, compared to the World Health Organization’s (WHO) threshold of 5 microgrammes per cubic meter.

Every Indian is exposed to PM2.5 levels above WHO recommendations, which is a startling discovery. Concentrations in some areas were as high as 119 microgrammes per cubic meter, an astounding 24 times the WHO’s recommended limit.

Karolinska Institutet principal researcher Petter Ljungman highlighted how inadequate India’s air quality regulations are. “India’s current air quality regulations are insufficient to protect public health.” He stated there is an urgent need for stricter laws and swift action to reduce emissions.

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Regional Inequalities and Policy Difficulties

The results also showed significant geographical differences in air pollution levels. For example, the lowest PM2.5 levels (11.2 microgrammes per cubic meter) were observed in the Lower Subansiri region of Arunachal Pradesh in 2019, while the highest levels (119 microgrammes per cubic meter) were recorded in Delhi and Ghaziabad, Uttar Pradesh, in 2016.

PM2.5 levels have risen in several places even after India’s National Clean Air Programme was started in 2017. Between 2009 and 2019, the number of deaths attributed to air pollution rose from 4.5 million to 7.3 million, underscoring the pressing need for more efficient policy implementation.

The researchers found one significant problem in the transboundary nature of PM2.5 particles, which can move hundreds of km. This implies that measures to combat long-range air pollution must be combined with local emission reduction initiatives.

Ljungman continued, “This study offers crucial evidence to support the development of stronger air quality policies in India and globally.”

The 2019 Global Burden of Diseases Study, which linked outdoor air pollution to around one million deaths in India, is one estimate of air pollution-related mortality that the study also challenges. The Karolinska Institute researchers used data from India specifically to demonstrate a stronger cause-and-effect association between PM2.5 exposure and mortality, in contrast to previous estimates based on data from nations with far lower pollution levels.

An Immediate Call to Action

India has serious public health concerns since about 1.4 billion people are exposed to dangerous air all year round. The results highlight the necessity for swift, decisive action to reduce air pollution. To solve this growing health hazard, priority must be given to stricter air quality standards, sophisticated monitoring systems, and all-encompassing emission reduction measures. In addition to being essential for the people of India, addressing air pollution is a major worldwide issue. The data from the study serves as a basis for developing more robust regulations that can lessen the catastrophic effects of air pollution and save millions of lives.

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