Daily exposure to polluted air may have consequences beyond lung damage; it could also influence your emotional well-being. A recent study featured in Environmental Science and Ecotechnology indicates a significant correlation between prolonged exposure to air pollution and an increased likelihood of experiencing depression.

This research, carried out by Harbin Medical University in collaboration with Cranfield University, monitored adults aged 45 and older in China over a span of seven years, examining the effects of six prevalent air pollutants on mental health.

Air pollution and mental health risks

The research indicates that sulfur dioxide (SO₂) is the primary pollutant most closely associated with a heightened risk of depression. Additionally, carbon monoxide (CO) and fine particulate matter (PM2.5) contribute to an increased likelihood of mental health problems. The findings also imply that exposure to a combination of these pollutants can considerably elevate the risk of developing depression.

The researchers indicated that air pollutants could affect the central nervous system by inducing oxidative stress and inflammation. These effects may arise through several mechanisms, such as the bloodstream, the trigeminal nerve, or olfactory receptor neurons. Nevertheless, they emphasized that further investigation is necessary to comprehensively understand the relationship between air pollution and mental health problems.

What to know about depression

Depression is a mood disorder characterized by enduring feelings of sadness and a diminished interest in everyday activities. Commonly known as clinical depression, it may lead to symptoms including anxiety, fatigue, irritability, insomnia, and a disinterest in previously enjoyable activities, as noted by the Mayo Clinic. Individuals experiencing these symptoms should consider consulting a healthcare professional for assistance.

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