A recent study has established a potential link between air pollution and the risk and severity of obstructive sleep apnea (OSA). The study, published in the International Neurotoxicology Association, suggests that prolonged exposure to high levels of air pollutants can trigger inflammation and oxidative stress, contributing to upper airway dysfunction during sleep. Notably, nitrogen dioxide (NO2), a common pollutant from road traffic and fossil fuel combustion, may play a significant role in worsening OSA symptoms.