Polycyclic aromatic hydrocarbon exposure, obesity and childhood asthma in an urban cohort (Abstract, Kyung Hwa Jung, Matthew Perzanowski, Andrew Rundle, Kathleen Moors, Beizhan Yan, Steven N. Chillrud, Robin Whyatt, David Camann, Frederica P. Perera, Rachel L. Miller, Science Direct, Jan. 2014)
Also discussed here: Obese Children More Susceptible to Asthma from Air Pollution(Science Daily, Jan. 22, 2014)
And here: Effects of fine particulate matter and its constituents on low birth weight among full-term infants in California(Rupa Basu, Maria Harris, Lillian Sie, Brian Malig, Rachel Broadwin, Rochelle Green, Environmental Research, Jan. 2014)
Today we review research into the links between traffic exhaust and the health of children. Results indicate that three times as many obese children have asthma as non-obese children. Further that this type of pollution also has a negative effect on birth weights. Explanations have to do with the greater time spent indoors by overweight children, exposing them to more polycyclic aromatic hydrocarbons (PAH) and the fact that overweight children breath at a greater rate than non obese ones and thus have greater exposure to pollution.
"Our results suggest that obesity may magnify the effects of these air pollutants, putting children at greater risk for having asthma,"
"One possible explanation is that sedentary lifestyle in obese children could result in more time spent indoors, thereby increasing exposure to indoor PAH. Another may have to do with more rapid breathing in those who are obese.”
"These findings suggest that we may be able to bring down childhood asthma rates by curbing indoor, as well as outdoor, air pollution and by implementing age-appropriate diet and exercise programs,"
“Obese children exposed to high levels of air pollutants were nearly three times as likely to have asthma, compared with non-obese children and lower levels of pollution exposure”
“Reducing methylphenanthrene exposure might be beneficial for obese children with asthma”
“Obese young children may be more likely to develop asthma in association with greater exposure to PAHs, and methylphenanthrenes in particular, than non-obese children.”
“Fine particles and several of its constituents associated with birth weight reductions….Largest reductions for traffic-related particles, sulfur constituents, and metals”