Men and women who "feel lonely" are more likely to have worse mental health, heart disease conditions and die early than those "living alone", according to a study.
The findings showed that loneliness was associated with a doubled mortality risk in women and nearly doubled risk in men.
Both men and women who felt lonely were three times more likely to report symptoms of anxiety and depression, and had a significantly lower quality of life than those who did not feel lonely.
The results were presented at the annual nursing congress EuroHeartCare 2018 in Dublin.
The study investigated whether poor social network was associated with worse outcomes in 13,463 patients with ischaemic heart disease, arrhythmia (abnormal heart rhythm), heart failure, or heart valve disease.