'Anger outbursts' increase heart attack and stroke risk
4 March 2014 Last updated at 09:00 GMT
A higher frequency and "intensity" of anger outbursts can increase the risk of suffering a heart attack or stroke, research from the Harvard School of Public Health has found.
The study's lead author Dr Elizabeth Mostofsky told the Today programme "acute anger" has been shown to increase heart rate, blood pressure and stiffness in the blood vessels.
First broadcast on BBC Radio 4's Today programme on Tuesday 4 March.