How Air Pollution Impacts Your Liver

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Air pollution affects liver health and can cause fibrosis, according to findings published in the Journal of Hepatology.

Researchers from Wayne State University, Detroit, MI, experimented with the high concentration airborne particle matter called PM2.5 to investigate the effects of air pollution on the liver. Previous research has linked PM2.5 to the liver, causing effects like fibrosis, metabolic disease, and liver cancer. Other research focused on the effects of pollution on lung tissues and the cardiovascular system, but these experts hypothesized that pollution would also be detrimental to the liver. Already the liver acts as one of the body’s detoxification and metabolism centers.

The researchers added that PM2.5 is smaller than 2.5 micrometers and is a mixture of particles and gases from gasoline and diesel engines in addition to dust from roads, tires, and brakes. The collagen deposition was a trademark of fibrosis and the transforming growth factor beta was also discovered.

“Our work has a major impact on medical care and health policy making for the populations under air pollution environment,” research leader Kezhong Zhang, PhD, said in a press release. “Liver fibrosis is an advanced stage of chronic liver injuries caused by chronic hepatitis viral infection, obesity, alcoholism, or autoimmune diseases. Our work defined that air pollution, specifically PM2.5 pollutant, is an independent risk factor of liver fibrosis. The molecular and cellular mechanisms we revealed in this work have very important implications in clinical disease diagnosis and treatment associated with air pollution.”

Additionally, patients who experience extensive daily traffic and automobile mechanics should pay extra attention to biomarkers and liver enzymes that may indicate liver disease.

“Physicians or health care professionals should monitor liver pathology and consider preventive therapeutic strategies for liver disease for populations and patients in urban air pollution environments,” Zhang concluded.

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