Anger impairs blood vessel dilation, increasing heart attack and stroke risks, according to a Columbia University study.

Anger may increase heart attack and stroke risks by impairing blood vessel dilation, according to a new study published in the Journal of the American Heart Association. Researchers at Columbia University found that short bursts of anger can affect blood vessel function, increasing the risk of heart attacks and strokes for up to 40 minutes. This discovery helps explain why some individuals experience cardiac events during emotional outbursts.