Loneliness and social isolation are common, and both are independent risk factors for cardiovascular and brain health problems, according to the American Heart Association.
Social Isolation, Loneliness Increase Risk of Fatal Heart Attacks and Strokes
Loneliness and health Nature Reviews Disease Primers
Loneliness A Global Health Threat, As Deadly As Smoking 15 Cigarettes A Day: WHO
Social isolation and loneliness increase the risk of death from heart attack, stroke
PDF) Evaluation of Social Isolation, Loneliness, and Cardiovascular Disease Among Older Women in the US
Heart attack: Loneliness could raise your risk by 29% - study
Loneliness and Social Isolation as Risk Factors for Mortality: A Meta-Analytic Review - Julianne Holt-Lunstad, Timothy B. Smith, Mark Baker, Tyler Harris, David Stephenson, 2015
PDF] Loneliness, Social Isolation, and Cardiovascular Health
Rheumatoid Arthritis and Heart Disease: How to Lower Your Risk