Delhi's Very Poor Air Quality Raises Health Concerns for People With Respiratory Conditions

Air pollution contains a mixture of particulate matter and gases that can irritate the respiratory tract and affect cardiovascular and respiratory health. Fine particulate matter, particularly PM2.5, can penetrate deep into the lungs and may enter the bloodstream.

When air quality deteriorates, people may experience coughing, throat irritation, eye discomfort, breathlessness or worsening of existing asthma and chronic lung disease. Long-term exposure is also associated with increased risks of cardiovascular and respiratory illness.

The 2 November report highlights concerns in Delhi as air quality entered the very poor category. Doctors caution that healthy people are not completely protected from the effects of polluted air, although people with asthma, chronic obstructive pulmonary disease, heart disease, children and older adults may be especially vulnerable.

Public-health measures include monitoring local air-quality alerts, reducing strenuous outdoor activity during severe pollution episodes, using suitable respiratory protection where advised and following prescribed medication plans. Severe breathlessness or chest pain requires urgent medical attention.