And he says that the Muslim Contact Unit and its partners got results, persuading young men that the answers to their anger lay in politics rather than violence.
Dr Williams and Dr Mattingley suspect the reason for this is that being able to spot an angry individual quickly has a survival advantage and, since anger is more likely to turn into lethal violence in men than in women, the ability to spot angry males quickly is particularly valuable.
For men with high levels of distress in childhood - which included being easily frustrated and quick to anger - the increased risk of cardiovascular disease was 17%.