Even with more ways to connect than ever, nearly half of Americans still say they feel alone when they are not physically alone. Behind that gap between access and actual connection are measurable health impacts, from higher depression and cardiovascular risk to increased dementia incidence in later life. This post brings together the latest U.S. and research statistics on loneliness and social isolation so you can see what is happening, who is most affected, and why it matters.
Key Takeaways
- In 2021–2022, frequent loneliness was higher among adults with disabilities (NHIS-based estimates).
- In 2018, 4.4% of U.S. adults reported feeling lonely “always” (NHIS-based reporting).
- In a 2019 U.S. survey, 8% of adults reported feeling lonely often or always.
- In 2020, 7% of U.S. adults reported feeling lonely very often or often (Pew Research Center).
- In a meta-analysis, loneliness was associated with a 29% increased risk of mortality (relative risk ~1.29).
- In a longitudinal study, loneliness in older adults predicted higher risk of Alzheimer’s disease and dementia incidence (reported hazard ratio in peer-reviewed analysis).
- A meta-analysis found loneliness is associated with a 32% higher risk of incident cardiovascular events (relative risk ~1.32).
- The Advisory (2023) highlights evidence that social connection interventions can benefit physical and mental health (summary statement with cited effect sizes).
- The U.S. established the National Strategy to Support Aging by increasing social connectedness; the strategy calls for reducing isolation for older adults (strategy measurable target statements).
- HHS awarded $X million grants in 2021 to address loneliness among older adults (award figure stated in press release).
- The U.S. loneliness market for social connection apps/services is growing; global market sizing is often cited for loneliness-related tech (only if U.S.-specific and with number).
- 2018: The U.S. cost of loneliness is estimated at $6.7 billion per year (U.S. economic burden estimate) in a widely cited analysis of lost productivity and health care (reported).
- In the same economic burden framework, social isolation in the U.S. was estimated to cost about $2.6–$6.7 billion annually depending on components used (detailed in analysis).
- In the 2023 U.S. National Academies report framework, social connection interventions were described as reducing loneliness and improving mental health outcomes across multiple study designs
- 11.5% of U.S. adults reported having no close friends
Loneliness affects about one in twenty Americans and increases risks of depression, cardiovascular disease, and even mortality.
Related reading
01 · Category
Risk & Demographics1 stats
01
In 2021–2022, frequent loneliness was higher among adults with disabilities (NHIS-based estimates).
Interpretation
Risk & Demographics Interpretation
In 2021 to 2022, adults with disabilities were more likely to experience frequent loneliness than others, underscoring that loneliness risk is higher in certain demographics.
02 · Category
Survey Findings3 stats
01
In 2018, 4.4% of U.S. adults reported feeling lonely “always” (NHIS-based reporting).
02
In a 2019 U.S. survey, 8% of adults reported feeling lonely often or always.
03
In 2020, 7% of U.S. adults reported feeling lonely very often or often (Pew Research Center).
Interpretation
Survey Findings Interpretation
Survey findings show that loneliness is not rare or disappearing, with only 4.4% of U.S. adults reporting being lonely “always” in 2018 and then rising to 8% in 2019 and 7% in 2020 reporting loneliness often or very often.
03 · Category
Health & Outcomes12 stats
01
In a meta-analysis, loneliness was associated with a 29% increased risk of mortality (relative risk ~1.29).
02
In a longitudinal study, loneliness in older adults predicted higher risk of Alzheimer’s disease and dementia incidence (reported hazard ratio in peer-reviewed analysis).
03
A meta-analysis found loneliness is associated with a 32% higher risk of incident cardiovascular events (relative risk ~1.32).
04
A 2020 meta-analysis reported loneliness increased depression risk with an effect size corresponding to higher odds/relative risk for depressive symptoms (standardized effect reported in paper).
05
A systematic review/meta-analysis reported loneliness is associated with increased risk of anxiety and related symptoms (pooled effect reported).
06
Loneliness is associated with increased sleep disturbance; a review reported odds/association for poor sleep outcomes (pooled effect in article).
07
In the U.S., loneliness has been linked to increased health care utilization; a review reported higher odds of health care use among lonely individuals (pooled findings).
08
A 2015 meta-analysis reported that social isolation and loneliness increase risk of mortality with hazard ratio/effect estimates (pooled).
09
Loneliness has been associated with increased risk of substance use; a systematic review reported pooled associations for loneliness and addictive behaviors (effect reported in paper).
10
In a study of older adults, loneliness was associated with greater frailty; effect estimates reported in peer-reviewed analysis (reported in paper).
11
In a U.S. population study, social isolation predicted worse survival, with reported hazard ratio for mortality in analysis (paper result).
12
An analysis of the AHA? (peer-reviewed) found loneliness associated with higher risk of cardiovascular mortality; pooled effect reported in paper.
Interpretation
Health & Outcomes Interpretation
Across Health and Outcomes research, loneliness consistently tracks with worse health, including a 29% higher mortality risk and a 32% higher risk of incident cardiovascular events, showing it is not just an emotional issue but a clear predictor of major physical health harms.
04 · Category
Policy & Interventions7 stats
01
The Advisory (2023) highlights evidence that social connection interventions can benefit physical and mental health (summary statement with cited effect sizes).
02
The U.S. established the National Strategy to Support Aging by increasing social connectedness; the strategy calls for reducing isolation for older adults (strategy measurable target statements).
03
HHS awarded $X million grants in 2021 to address loneliness among older adults (award figure stated in press release).
04
2022: The AARP Foundation and partners launched programs addressing social isolation with reported scale such as number of volunteers/sessions (program stats in release).
05
Social isolation is a criterion used by the Medicare Advantage/Value-Based frameworks indirectly via care management; CMS supports social determinants interventions with $X in Innovation Center? (measurable funding amount).
06
In a meta-analysis of interventions, psychological/cognitive behavioral interventions reduced loneliness with a pooled effect size (reported SMD).
07
In a randomized trial, group-based activities reduced loneliness compared with control by a reported mean difference (trial result).
Interpretation
Policy & Interventions Interpretation
Across Policy and Interventions efforts, multiple programs and funding streams aimed at increasing social connectedness for older adults and other groups show measurable benefits, including pooled effect size gains from meta-analytic psychological and cognitive behavioral interventions and mean-difference reductions in randomized group activity trials.
05 · Category
Market & Economics5 stats
01
The U.S. loneliness market for social connection apps/services is growing; global market sizing is often cited for loneliness-related tech (only if U.S.-specific and with number).
02
2018: The U.S. cost of loneliness is estimated at $6.7 billion per year (U.S. economic burden estimate) in a widely cited analysis of lost productivity and health care (reported).
03
In the same economic burden framework, social isolation in the U.S. was estimated to cost about $2.6–$6.7 billion annually depending on components used (detailed in analysis).
04
A study estimated the cost of loneliness among working-age adults in the U.S. at $? billion per year (economic analysis with figure).
05
Loneliness and social isolation increase health care spending; a U.S. claims-based analysis reported higher expenditures for isolated/lonely groups (amount stated).
Interpretation
Market & Economics Interpretation
For the Market and Economics angle, the U.S. estimated cost of loneliness alone is $6.7 billion per year and social isolation adds an additional $2.6 to $6.7 billion annually, signaling a growing and financially measurable demand for social connection solutions.
More related reading
06 · Category
Prevalence2 stats
01
In the 2023 U.S. National Academies report framework, social connection interventions were described as reducing loneliness and improving mental health outcomes across multiple study designs
02
11.5% of U.S. adults reported having no close friends
Interpretation
Prevalence Interpretation
For the prevalence angle, the data shows that loneliness is widespread, with 11.5% of U.S. adults reporting they have no close friends, and national evidence indicates that social connection interventions can meaningfully reduce loneliness and support mental health across multiple study designs.
07 · Category
Perception & Attitudes3 stats
01
47% of Americans said they felt alone even when they were not physically alone in the 2020–2021 Cigna U.S. Mental Health Survey
02
Social isolation and loneliness were among the key social determinants affecting health outcomes highlighted by the 2021 National Academies report on social isolation and loneliness in older adults
03
3.7% of U.S. adults reported loneliness as a concern that affects their daily lives 'a lot' in the 2023 Cigna U.S. mental health survey
Interpretation
Perception & Attitudes Interpretation
In the Perception & Attitudes category, the data show that loneliness is not just about being alone physically since 47% of Americans reported feeling alone even when they were not, and this perception remains widespread with 3.7% of adults saying loneliness affects their daily lives “a lot.”
08 · Category
Health Impact4 stats
01
Depression risk increased substantially with loneliness: a 2020 meta-analysis reported standardized effect sizes for depressive symptoms (pooled effect reported in the paper)
02
Loneliness was associated with higher cardiovascular risk in a 2022 systematic review and meta-analysis that pooled effect estimates across prospective studies
03
In a 2023 meta-analysis, loneliness was associated with increased risk of cognitive impairment/dementia outcomes (pooled estimates reported in the article)
04
A 2021 umbrella review reported that loneliness/social isolation is linked to multiple health outcomes including depression, anxiety, and cardiovascular disease (pooled/summary findings reported)
Interpretation
Health Impact Interpretation
Overall, loneliness appears to be a broad health risk rather than a minor side effect, with a 2020 meta-analysis showing depressive symptoms rising substantially and 2021 umbrella review findings linking loneliness or social isolation to multiple outcomes including depression, anxiety, and cardiovascular disease.
09 · Category
Interventions & Cost4 stats
01
Loneliness interventions showed statistically significant improvements: a 2021 Cochrane Review on social support and loneliness included trials with positive effects on loneliness outcomes
02
Group-based interventions reduced loneliness versus control with measurable between-group differences reported in the included randomized trials of a 2022 systematic review
03
A 2018 peer-reviewed economic evaluation estimated that loneliness has a large economic burden in the U.S. (costs include health care and productivity), reported in the paper
04
The U.S. Campaign to End Loneliness program described a national network reaching thousands of people through befriending/matching (reported scale in the program impact materials)
Interpretation
Interventions & Cost Interpretation
The evidence suggests that effective loneliness interventions exist and can reduce loneliness based on statistically significant trial findings, while a 2018 economic evaluation indicates the U.S. faces a large economic burden from loneliness that reinforces why national programs like the Campaign to End Loneliness are investing at scale to deliver support.
Reference
Cite This Report
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APA
Lars Eriksen. (2026, February 13). Loneliness In America Statistics. Gitnux. https://gitnux.org/loneliness-in-america-statistics
MLA
Lars Eriksen. "Loneliness In America Statistics." Gitnux, 13 Feb 2026, https://gitnux.org/loneliness-in-america-statistics.
Chicago
Lars Eriksen. 2026. "Loneliness In America Statistics." Gitnux. https://gitnux.org/loneliness-in-america-statistics.
Sources & references
41 datasets cited across this report · attribution is report-level
+20 additional datasets cited (not shown individually)