Long before Delhi's air pollution crossed the threshold of 'severe' and the Air Quality Index (AQI) surged past 400, a study conducted by the reputed health magazine, The Lancet, had found that the air pollution, primarily from PM2.5 particles, increases the risk of type 2 diabetes. The research conducted in the southern city of Chennai and the national capital of Delhi also found that inhaling air with high amounts of PM2.5 particles can lead to high blood sugar levels and increased type 2 diabetes incidence. The PM2.5 level in Delhi is many times worse than recommended by the World Health Organization (WHO) and poses serious health risks like respiratory and cardiovascular diseases, too.

PM2.5 particles

Two years ago, the average annual PM2.5 levels in Delhi were 82-100 μg/m³, while in

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