Marriage comes with a whole range of benefits and one such benefit is that, people with heart diseases who are married end up facing a lesser risk of death than people with heart diseases and are unmarried.
Compared to married heart disease patients, being unmarried was associated with a higher risk of dying, said the study published in the Journal of the American Heart Association.
"I was somewhat surprised by the magnitude of the influence of being married has (on heart patients)," said lead researcher Arshed Quyyumi, Professor of Medicine at Emory University in Atlanta, US.
The study of 6,051 patients (average age 63) undergoing cardiac catheterisation for coronary artery disease showed poor outcomes specifically among those who were divorced, separated, widowed or never married.
The researchers followed the patients for nearly four years.
The findings showed that compared to married patients, being unmarried was associated with 24 per cent higher risk of death from any cause and 45 per cent higher risk of death from cardiovascular disease.
And specifically, the risk of heart attack was 40 per cent higher for those who were never married, the study said.