According to the American Heart Association, there is growing evidence that stress contributes to heart disease, although exactly how remains unclear. If you already have heart disease, such as heart failure, stress can make the condition worse. So it's important to understand how stress affects your heart and what you can do to avoid it.
Stress takes its toll
When you react to a stressful situation, stress hormones are released into your bloodstream and your heart rate and blood pressure increase. This increases the demand on the cardiovascular system, particularly on the heart. For people with heart disease, their heart may not be able to keep up with this increased demand, leading to irregular heart rhythms, chest pain (angina) or even heart attack.
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