Does Getting Angry or Being Short-Tempered Damage Your Heart? 

Occasional anger is unlikely to “damage your heart”. When we become angry or stressed, the body activates the sympathetic nervous system, triggering a normal “fight or flight” response. This causes your heart rate and blood pressure to rise and stress hormones to be released.
 

The concern is when anger, hostility or psychological stress becomes frequent and persistent. Over time, this may contribute to high blood pressure and other cardiovascular risk factors. The effects can also be indirect. Chronic stress may lead to poor sleep, reduced physical activity, smoking, increased alcohol consumption or unhealthy eating, all of which can further increase cardiovascular risk.
 

Managing stress and finding healthy ways to regulate emotions are therefore important parts of looking after your heart, particularly if stress has become a regular part of daily life.