Can stress cause a heart attack in a healthy person?

Is it true that stressful events can cause heart attacks? 

Any cardiologist will tell you that both angina (chest pain) and heart attacks can be triggered by acute stress. Sudden heart attacks happen either because not enough blood and oxygen flow to the heart or because of arrhythmias, erratic or missed heartbeats. If you look at the list of effects of stress on the heart at the beginning of the chapter(Link), you’ll see that the heart works harder and arteries constrict, reducing the amount of blood reaching the heart. Ventricular arrhythmias can also be triggered by stress.
It has been suggested that stress may be a trigger for earlymorning heart attacks and death from sudden heart attacks and from stroke.

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