What triggers heart attacks?
Sudden stress — whether it's from anger, a heat wave, or getting out of bed — can be the final "insult" that sets off a heart attack, stroke, or cardiac arrest.
Heart attacks, strokes, and cardiac arrests seem like they come out of the blue, but most don't. They usually appear after cholesterol-rich plaque has festered for decades in arteries nourishing the heart and brain. So what makes one happen at a particular time? A trigger.
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