Study: Heart Attack Risk Increases When Temperature Drops Below Freezing

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PITTSBURGH (KDKA) – Is there such thing as heart attack season?
One cardiologist has seen a seasonal pattern.
“Just in general, when you look at statistics, heart attacks are more prevalent in winter,” says Dr. Srinivas Murali, a cardiologist at Allegheny Health Network.
To look at this with more detail, researchers did a study in Sweden, where medical records are kept systematically.
All heart attacks go into a registry. In fact, they had dat