India, Nov. 6 -- As winter descends, northern Indian cities face a hazardous mix of dense smog and plunging temperatures, creating a toxic environment for lungs. According to Dr Sushil Kumar Upadhyay, consultant pulmonologist at Kailash Deepak Hospital, New Delhi, this combination triggers 'cold-pollution respiratory stress', a condition marked by persistent cough, chest tightness, and shortness of breath. Also read | Foreigner's grim take on Delhi air pollution as thick smog chokes city: 'Could barely see the sun'

In an interview with HT Lifestyle, Dr Upadhyay, explained that cold air constricts airways, while pollutants inflame lungs, placing a dual burden on the respiratory system. This can lead to severe consequences, especially for ...