medical researchers aren't sure exactly how stress increases the risk of heart disease. stress itself might be a risk factor or it could be that high levels of stress make other risk factors (such as high cholesterol or high blood pressure) worse. for example if you are under stress your blood pressure goes up you may overeat you may exercise less and you may be more likely to smoke. if stress itself is a risk factor for heart disease it could be because chronic stress exposes your body to unhealthy persistently elevated levels of stress hormones like adrenaline and cortisol. studies also link stress to changes in the way blood clots which increases the risk of heart attack.
how does stress contribute to heart disease?