The Loneliness Crisis
From the U.S. Surgeon General to the Cigna Group, from AARP to the American Heart Association—the research is unanimous. Loneliness is a public health crisis with consequences that rival smoking.
When Every Source Agrees
In May 2023, the U.S. Surgeon General issued an 82-page advisory—“Our Epidemic of Loneliness and Isolation”—formally declaring loneliness a public health epidemic. But this wasn't a lone voice. The advisory synthesized decades of independent research from medical journals, government agencies, and academic institutions that had already been sounding the alarm.
The Cigna Group's ongoing national surveys have tracked loneliness rates climbing steadily, with more than half of Americans now reporting they feel lonely. AARP's “Disconnected” report found more than one in three adults over 45 experiencing chronic loneliness. The American Heart Association linked social isolation to significantly increased cardiovascular risk. The National Academies of Sciences documented elevated dementia risk among chronically lonely older adults.
Across hundreds of peer-reviewed studies—including a landmark meta-analysis of 148 independent studies involving over 300,000 participants with an average 7.5-year follow-up—the research consistently shows that strong social connections increase the odds of survival by 50%. The convergence of evidence is rare in public health: virtually every major institution studying this issue has reached the same conclusion.
Formally declared loneliness a public health epidemic, synthesizing decades of research and calling for a national framework to rebuild social connection infrastructure.
National surveys tracking steady increases in loneliness, with more than half of Americans now reporting they feel lonely.
"Disconnected" report revealing chronic loneliness affects more than a third of adults in the 45+ population.
Scientific statement documenting that social isolation and loneliness significantly increase cardiovascular disease risk.
Comprehensive review finding chronically lonely older adults face dramatically elevated risk of cognitive decline and dementia.
By the Numbers
National prevalence data from the most authoritative sources in public health research.
The Friendship Recession
Americans are experiencing what researchers call a “friendship recession.” In 1990, only 27% of Americans said they had three or fewer close friends. Today, that number has nearly doubled to 49%, and the share reporting zero close friends has quadrupled (Survey Center on American Life, 2024). In-person socializing among young adults hit an all-time low in 2024 (Bureau of Labor Statistics, American Time Use Survey).
Trust has eroded in parallel. Only about 30% of Americans say most people can be trusted—down from 46% in 1972 (Pew Research Center, 2025). Religious congregation membership—historically a major source of community—fell below 50% for the first time in survey history, and weekend attendance has fallen to roughly 30% (Gallup, 2024). Only 16% of Americans reported feeling “very attached” to their local community.
This isn't about introversion or personal choice. It's a structural shift in how Americans live, work, and socialize. Single-person households have grown from 13% in 1960 to 29% today. Remote work, geographic mobility, declining participation in community organizations, and the displacement of in-person interaction by digital media have all contributed to a society where forming and maintaining friendships has become remarkably difficult.
Understanding the Terms
Loneliness
A subjective feeling—the distressing experience that results from perceived gaps in social connection. You can be surrounded by people and still feel lonely. It's about the quality and depth of your relationships, not just the quantity.
Social Isolation
An objective lack of social connections—having few people to interact with regularly. Social isolation is measurable by contact frequency and network size. Both loneliness and social isolation independently increase health risks.
“The mortality impact of being socially disconnected is similar to that caused by smoking up to 15 cigarettes a day, and even greater than that associated with obesity and physical inactivity.”— U.S. Surgeon General's Advisory, May 2023
The crisis cuts across every generation, income level, and demographic.
Who It Affects