Coughing at Night? Study Links Air Pollution to Poor Sleep
Researchers found a 2.4% rise in coughing when PM2.5 increased by 10 micrograms per cubic meter, even below World Health Organization limits.
- Nighttime coughing is linked to local particulate matter levels, according to new research from Cambridge University and Tsinghua University published in Communications Health.
- The team utilized the Sleep Cycle app to analyze sound data from tens of thousands of users over 18 months, building an "unprecedented" dataset from more than 4 billion sleep sessions.
- Analysis revealed a 2.4% rise in coughing levels with each 10-microgram increase in particulate matter, even where pollution remained below World Health Organization recommended daily exposure limits.
- After accounting for flu season and weather variables, lead author Tong Xia and Professor Cecilia Mascolo observed coughing spikes in Los Angeles during January 2025 wildfires, supporting the pollution link.
- Mascolo suggests there may be "no such thing as a safe threshold" for pollution exposure, recommending individuals consider mitigating personal risk by using air filters or masks.
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A recent scientific study has shown a correlation between rising levels of air pollution and increasing coughing during the night, even in cities with levels of microparticles.
Nighttime coughing could be due to air pollution levels, research suggests
Has your partner ever woken you up at night with their coughing? Has your coughing ever woken them up? New research suggests it could be due to air pollution levels in your area, even if those levels are low.
Air pollution linked to more nighttime coughing, study finds
New research using data from a popular sleep-tracking app has uncovered a striking link between air pollution and nighttime coughing – even when pollution levels are within recommended safety limits. Scientists from the University of Cambridge, Tsinghua University, and sleep technology company Sleep Cycle analysed coughing sounds from 32 cities across 12 countries over 500 days. Their findings show that higher daily air pollution levels were str…
Sleep app tracks link between air pollution and a bad night's sleep
Has your partner ever woken you up at night with their coughing? Has your coughing ever woken them up? New research suggests it could be due to air pollution levels in your area, even if those levels are low.
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