Harvard Heart Letter

Air pollution: A threat to your heart and longevity?

New research links “safe” levels of air pollution to premature death. Every day, you inhale thousands of gallons of air — mostly nitrogen, oxygen, and a smattering of other gases. But that air also contains tiny particles spewed from power plants, industrial factories, and vehicles. These pollutants can trigger heart attacks, strokes, and irregular heart rhythms, especially in people who already have or who are at risk for heart disease. …

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