Pinpointing air pollution's effects on the heart

Scientists are untangling how the tiniest pollution particles -- which we take in with every breath we breathe -- affect our health, making people more vulnerable to cardiovascular and respiratory problems. While scientists know that air pollution can aggravate heart problems, showing exactly how it does so has been challenging. Scientists have now shown that in people with diabetes, breathing ultrafine particles can activate platelets, cells in the blood that normally reduce bleeding from a wound, but can contribute to cardiovascular disease.

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