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Loneliness is bad for your heart

Loneliness is bad for your heart

Publication date: Wednesday, 04 July 2018
Contributor(s): Jeremy Bray

Loneliness injures the heart and is a strong predictor of premature death, according to a study presented at EuroHeartCare 2018, the European Society of Cardiology's annual nursing congress. The study found that feeling lonely was a stronger predictor of poor outcomes than living alone, in both men and women.

"Loneliness is more common today than ever before, and more and more people are living alone. As healthcare professionals, we need to take this into consideration when assessing patient risks," said Anne Vinggaard Christensen, the first author of the study and a PhD student at the Heart Centre at Copenhagen University Hospital, Denmark.  She added, “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."

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. Data from national registers was linked with the DenHeart survey, which asked all patients discharged from April 2013 to April 2014 from five heart centres in Denmark to answer a questionnaire about their physical and mental health, lifestyle factors such as smoking, and social support. Social support was measured using registry data on living alone or not, and survey questions about feeling lonely such as, ‘Do you have someone to talk to when you need it? Do you feel alone sometimes even though you want to be with someone?’ It was important to collect information on both, since people may live alone but not feel lonely while others cohabit but do feel lonely. 

Feeling lonely was associated with poor outcomes in all patients regardless of their type of heart disease, and even after adjusting for age, level of education, other diseases, body mass index, smoking, and alcohol intake. 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.

European guidelines on cardiovascular prevention state that people who are isolated or disconnected from others are at increased risk of developing and dying prematurely from coronary artery disease. The guidelines recommend assessment of psychosocial risk factors in patients with established cardiovascular disease and those at high risk of developing cardiovascular disease.




Loneliness is a strong predictor of premature death, worse mental health, and lower quality of life in patients with cardiovascular disease, and a much stronger predictor than living alone, in both men and women. Loneliness is more common in our society and healthcare professionals should take this into account when assessing risk. The study shows that asking two questions about social support provides a lot of information about the likelihood of having poor health outcomes. 

Christensen AV, et al. Poor social network is associated with impaired self-rated health and symptoms of anxiety and depression across cardiac diagnoses. Oral abstract presented at EuroHeartCare 2018, Dublin, 9 June 2018 (FP Nr 241).

Topics covered:
Category: Evidence in Practice
Edition: Volume 3 Number 7 PCCJ Online 2018
Contributor(s): Jeremy Bray

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