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  • Air pollution linked...

Air pollution linked to depressive symptoms in adolescents

Written By : Hina Zahid |Medically Reviewed By : Dr. Kamal Kant Kohli Published On 2022-03-16T10:30:57+05:30  |  Updated On 16 March 2022 10:31 AM IST
Air pollution linked to depressive symptoms in adolescents
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Exposure to ozone from air pollution has been linked to an increase in depressive symptoms for adolescents over time, even in neighborhoods that meet air quality standards, according to new research published by the American Psychological Association.

Ozone is a gas that is produced when various pollutants from motor vehicle exhaust, power plants and other sources react to sunlight. Higher ozone levels have been linked to various physical ailments, including asthma, respiratory viruses and premature death from respiratory causes. This study is the first to link ozone levels to the development of depression symptoms in adolescents over time. Those symptoms may include persistent feelings of sadness or hopelessness, difficulty with concentration, sleep disturbances and thoughts about suicide.

"I think our findings really speak to the importance of considering air pollution's impact on mental health in addition to physical health," said lead researcher Erika Manczak, PhD, an assistant professor of psychology at the University of Denver.

The researchers analyzed data from a previous study about early life stress with 213 adolescent participants (aged 9 to 13 years old) in the San Francisco Bay area. The researchers compared data about the adolescents' mental health over a four-year period with Census tracts for their home addresses and air quality data for those tracts from the California Environmental Protection Agency.

Adolescents who lived in areas with relatively higher ozone levels showed significant increases in depressive symptoms over time, even though the ozone levels in their neighborhoods didn't exceed state or national air quality standards. The findings weren't affected by the participants' sex, age, race, household income, parental education or socioeconomic characteristics of their neighborhoods. The research was published online in Developmental Psychology.

"It was surprising that the average level of ozone was fairly low even in the communities with relatively higher ozone exposure," Manczak said. "This really underscores the fact that even low levels of ozone exposure have potentially harmful effects."

Ozone and other components of air pollution can contribute to high levels of inflammation in the body, which has been linked to the onset and development of depression. Adolescents may be especially sensitive to these effects because they spend more time outdoors.

The study included a relatively small sample size from one area of the United States. The findings are correlational so it can't be proven that ozone levels caused an increase in depressive symptoms, only that there is a link between them. It's also possible that other components of air pollution besides ozone could be a factor.

Because air pollution disproportionately affects marginalized communities, ozone levels could be contributing to health disparities, Manczak said. Communities also should consider ways to reduce ozone exposure, such as holding youth sporting events indoors when necessary and limiting driving during peak hours of air pollution alerts. Investment in clean and renewable energy sources that reduce air pollution also could be helpful.

"I believe state and federal air quality standards should be stricter, and we should have tighter regulations on industries that contribute to pollution," Manczak said. "Our findings and other studies suggest that even low levels of ozone exposure can pose potentially serious risks to both physical and mental health."


air pollutiondepressiondepressive symptomsadolescentdevelopmental psychology
Source : Developmental Psychology
Hina Zahid
Hina Zahid

    Hina Zahid Joined Medical Dialogue in 2017 with a passion to work as a Reporter. She coordinates with various national and international journals and association and covers all the stories related to Medical guidelines, Medical Journals, rare medical surgeries as well as all the updates in the medical field. Email: editorial@medicaldialogues.in. Contact no. 011-43720751

    Dr. Kamal Kant Kohli
    Dr. Kamal Kant Kohli

    Dr Kamal Kant Kohli-MBBS, DTCD- a chest specialist with more than 30 years of practice and a flair for writing clinical articles, Dr Kamal Kant Kohli joined Medical Dialogues as a Chief Editor of Medical News. Besides writing articles, as an editor, he proofreads and verifies all the medical content published on Medical Dialogues including those coming from journals, studies,medical conferences,guidelines etc. Email: drkohli@medicaldialogues.in. Contact no. 011-43720751

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