Keck School of Medicine of USCJun 28 2024 A new study brings fresh revelations about the connection between early-life exposure to air pollution and lung health later in life. A research team led by the Keck School of Medicine of USC has shown that exposure to air pollution during childhood is directly associated with bronchitis symptoms as an adult.
The team drew upon the USC Children's Health Study, a large-scale, decades-long study following cohorts of Southern Californians starting at school-age and, for many participants, continuing into adulthood. Importantly, the link between childhood air pollution exposure and adult bronchitis symptoms persisted even when the researchers adjusted for asthma or bronchitis symptoms early in life -; a finding that came as a surprise.
Ultimately the concern is twofold, for the health of young people today and for their future health when they grow up. Notably, among study participants with recent bronchitis symptoms as adults, average childhood exposure to a pollutant called nitrogen dioxide fell far below annual Environmental Protection Agency standards -; just a bit over half the limit that was set in 1971 and remains in place today.
Long-running health research proves vital to igniting discovery For as comprehensive an analysis as possible, average pollutant exposure over childhood was based on month-by-month estimates. The researchers matched up family home address at each time point with contemporaneous local air quality measurements taken by the EPA and through the Children's Health Study.
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