People who cannot control their anger have nowhere to turn leading to family breakdown, sickness and mental health problems, a charity has warned.
The Mental Health Foundation says anger is often dealt with only after someone has committed an aggressive crime.
Almost a third of 2,000 people polled said they had a friend or family member who struggled to contain their anger.
The charity is calling for more research and education into anger and earlier intervention in problem cases.
Chronic and intense anger has been linked to heart disease, cancer, stroke, colds and flu as well as depression, self-harm and substance misuse, the charity's Boiling Point report said.
And anger is more likely to have a negative effect on relationships than any other emotion.
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Read up on how to control your anger.