Usagevpn.com – Short-term rises in air pollution may be enough to aggravate the respiratory system and interrupt sleep, even in urban areas that generally appear to have clean air. A large observational study has linked increases in fine particulate matter with more night-time coughing, raising concern that brief pollution spikes can affect people before daily pollution averages exceed international guidance.

The work was led by researchers at the University of Cambridge in the United Kingdom, Tsinghua University in China, and sleep technology company Sleep Cycle. Their findings suggest that the lungs can react quickly to changing concentrations of fine particulate matter, commonly measured as micrograms per cubic metre of air.…