Living alone and having few social contacts is also a key risk factor for a heart attack.
However, the research busts the myth that chronic job stress sharply increases the likelihood of having a heart attack.
A review of 10 years' major heart research was used to develop this paper on psychosocial risk factors for heart disease.
The research also found that there was a 40 percent raise in death from heart attacks in bereaved people in the first six months after the death.
Acute emotional stress such as bereavement was also linked to a heart problem called takotsubo cardiomyopathy - where muscles of heart contract into an hour glass shape causing chest pain and impaired heart function.
Professor Tatoulis said this heart problem was more common in women aged 45-65 who were subjected to acute stress, but it usually resolved over 4-8 weeks.