Silent but deadly: Almost half of heart attacks are silent; they're still risky

May 17, 2016 9:21 AM by News Staff

CHICAGO (AP) - A new study found almost half of all heart attacks cause no obvious symptoms, yet they can still be life-threatening.

The research followed more than 9,000 middle-aged men and women for almost 13 years. It's one of the biggest studies to examine so-called silent heart attacks, and to explore them across racial and gender groups.

Researchers at Wake Forest University's medical school led the government-funded study. Results were published online Monday in the American Heart Association's journal, Circulation.

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