Featured18 February 2021

Research Center · Est. 2021
Independent reviews of the research on social connection, isolation and loneliness. Quantitative. Sceptical. Cited across the field.
1 in 6
people worldwide affected by loneliness
World Health Organization, Commission on Social Connection, 2025
871,000
deaths a year linked to loneliness
World Health Organization, Commission on Social Connection, 2025
Featured18 February 2021
Harvard Graduate School of Education, Making Caring Common, 2021
The most-quoted American prevalence figure of the pandemic period, and the one that established young adults rather than older adults as the loneliest age group in public understanding. Read alongside other surveys rather than against them: the instrument is specific to this study, so the 36% cannot be compared directly with figures from the Cigna index or federal surveillance.