Social isolation can be a killer, and not just figuratively. Loneliness may actually cause premature death by damaging the heart, according to a new study.

The research suggested that feeling loneliness may double a person’s risk of dying of cardiovascular disease.

“Loneliness is more common today than ever before, and more people live alone,” Anne Vinggaard Christensen, study author and a Ph.D. student at The Heart Centre at the Copenhagen University Hospital in Denmark, said in Not surprisingly, the study also showed a correlation between loneliness and increased symptoms of anxiety and depression. The team of Danish researchers presented their results at the European Society of Cardiology’s annual nursing conference over the weekend.

The study was based on data collected from 13,463 patients who suffered from either ischaemic heart disease, an abnormal heart rhythm, heart failure or heart valve disease.

The results were based on a survey in which patients answered questions about their physical and mental health. They were also asked to describe their levels of social support. Levels of loneliness were evaluated with questions such as, “Do you have someone to talk to when you need it?” and “Do you feel alone sometimes even though you want to be with someone?”. “Previous research has shown that loneliness and social isolation are linked with coronary heart disease and stroke, but this has not been investigated in patients with different types of cardiovascular disease."

Not surprisingly, the study also showed a correlation between loneliness and increased symptoms of anxiety and depression. The team of Danish researchers presented their results at the European Society of Cardiology’s annual nursing conference over the weekend.

The study was based on data collected from 13,463 patients who suffered from either ischaemic heart disease, an abnormal heart rhythm, heart failure or heart valve disease.

The results were based on a survey in which patients answered questions about their physical and mental health. They were also asked to describe their levels of social support. Levels of loneliness were evaluated with questions such as, “Do you have someone to talk to when you need it?” and “Do you feel alone sometimes even though you want to be with someone?”