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| Air Pollution Links to Heart Disease |
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People with high cholesterol are especially vulnerable to heart disease when they are exposed to diesel exhaust and other ultra-fine particles that are common pollutants in urban air, media reported Friday. "Their combination creates a dangerous synergy that wreaks cardiovascular havoc far beyond what's caused by the diesel or cholesterol alone," said Dr. André Nel, chief of nanomedicine at the David Geffen School of Medicine at UCLA in Although diet, smoking and other factors contribute to the risk of cardiovascular disease — the leading cause of death in the Western world — scientists have long believed that air pollution, particularly tiny pieces of soot from trucks and factories, plays a major role, too. For years, scientists around the world have reported that on days when fine-particle pollution increases, deaths from lung diseases, heart attacks and strokes rise substantially. The scientists say their study, conducted on human cells as well as on mice, is the first to explain how particulates in the air activate genes that can cause heart attacks or strokes. "Our results emphasize the importance of controlling air pollution as another tool for preventing cardiovascular disease," said Ke Wei Gong, a UCLA cardiology researcher. (Xinhua News Agency via Agencies July 28, 2007)
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