
© Thanasis Zovoilis/Getty
If you're among the 35 percent of U.S. adults who are not getting the recommended seven hours of sleep each night,
1 a silent intruder in your bedroom could be to blame: air pollution. With well-known adverse effects on your heart and lung health, research presented at the American Thoracic Society (ATS) 2017 International Conference suggests poor air quality may also disrupt your sleep.
2
The study looked closely at the effects of two widespread pollutants, nitrogen dioxide (NO2), which is traffic-related air pollution, and PM2.5, or fine-particle pollution, which is less than 2.5 micrometers in size and is responsible for reduced visibility.
Both of the pollutants had an influence on study participants' sleep efficiency, which is a measure of the time spent actually sleeping as opposed to lying in bed awake.
In fact, the people in the top quarter of NO2 exposure were 60 percent more likely to have low sleep efficiency over a five-year period compared to those in the lowest quarter. Among those exposed to the highest levels of fine-particle pollution, there was a 50 percent increased likelihood of low sleep efficiency.
The researchers suggested high air pollution levels may also lead to acute sleep effects after short-term exposures, but they
did not have adequate data to study the potential connection. Lead study author Dr. Martha E. Billings, assistant professor of medicine at the University of Washington, said in a press release:
3
"We thought an effect was likely given that air pollution causes upper airway irritation, swelling and congestion, and may also affect the central nervous system and brain areas that control breathing patterns and sleep ... These new findings indicate the possibility that commonly experienced levels of air pollution not only affect heart and lung disease, but also sleep quality. Improving air quality may be one way to enhance sleep health and perhaps reduce health disparities."
Comment: More on this industrial waste product being in dumped into the water supply in the name of health: