“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 diseases.”

The study investigated whether the 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 were linked with the DenHeart survey, which asked all patients discharged from April 2013 to April 2014 from five heart centers 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 – 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,” explained Ms. Vinggaard Christensen. 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.

Ms. Vinggaard Christensen noted that people with poor social support may have worse health outcomes because they have unhealthier lifestyles, are less compliant with treatment, and are more affected by stressful events. But she said: “We adjusted for lifestyle behaviors and many other factors in our analysis, and still found that loneliness is bad for health.”

She concluded: “We live in a time when loneliness is more present and health providers should take this into account when assessing risk. Our study shows that asking two questions about social support provides a lot of information about the likelihood of having poor health outcomes.”

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 an assessment of psychosocial risk factors in patients with established cardiovascular disease and those at high risk of developing cardiovascular disease.

The study has highlighted growing concerns about the issue and assumes great significance at places where loneliness is turning into a bane for victims due to lack of support system.

The study assumes significance and greater attention as the world marks the International Day of Older Persons on October 1, each year.

On December 14, 1990, the United Nations General Assembly voted to establish October 1 as the International Day of Older Persons as recorded in Resolution 45/106.

The holiday was observed for the first time on October 1, 1991. The holiday is celebrated by raising awareness about issues affecting the elderly, such as senescence and elder abuse. It is also a day to appreciate the contributions that older people make to society. This holiday is similar to National Grandparents Day in the United States and Canada as well as Double Ninth Festival in China and Respect for the Aged Day in Japan.