August 15, 2008
Air Pollution Increases Cardiac Illness
Air pollution has both short- and long-term toxic effects that injure the heart and blood vessels, increasing rates of cardiac illness, U.S. researchers say.
Dr. Robert A. Kloner of the Heart Institute of the Good Samaritan Hospital and Keck School of Medicine, University of Southern California, both in Los Angeles, said when pollutants are inhaled, they trigger an increase in "reactive oxygen species" -- superoxiding molecules that damage cells, cause inflammation in the lungs and spark the cascade of harmful effects in the heart and cardiovascular system.
"We used to think air pollution was a problem that primarily affects the lungs. We now know it is also bad for the heart," Kloner said in a statement.
The findings are published in the Journal of the American College of Cardiology.