What major health issue is associated with exposure to nitrogen dioxide?

Exposure to nitrogen dioxide (NO2) is primarily associated with respiratory problems. This gas is a significant air pollutant typically generated from vehicle emissions, industrial processes, and combustion of fossil fuels. When inhaled, nitrogen dioxide can cause irritation and inflammation of the airways, leading to conditions such as asthma, bronchitis, and other chronic respiratory diseases.

Research has shown that even short-term exposure to elevated levels of nitrogen dioxide can worsen pre-existing respiratory conditions and increase the risk of respiratory infections, particularly in vulnerable populations like children and individuals with chronic lung diseases. This makes respiratory health the primary concern related to nitrogen dioxide exposure.

While nitrogen dioxide may be linked to other health issues like cardiovascular effects, the most direct and documented impact is on the respiratory system, emphasizing the importance of air quality and proper management of nitrogen dioxide emissions to safeguard public health.