Everything Peace Buddy is built on, in one place.
We didn't start with a hunch. We looked at the actual research on loneliness, aging, and what genuinely helps, and built Peace Buddy to match what the evidence says works. Here's all of it, plainly.
This isn't a small problem, or a rare one
Loneliness in aging populations isn't an edge case. It's the norm, at a scale most people underestimate.
Nearly 3 in 10 older adults are lonely, worldwide
A 2025 meta-analysis pooling 126 studies and 1.25 million older adults found this prevalence rate globally. North America had the highest regional rate measured, at 30.5%.
Global systematic review & meta-analysis, Humanities & Social Sciences Communications, 2025Of adults 45+ report being lonely
Up from 35% in both 2010 and 2018. Loneliness in this age group isn't declining, it's climbing, and men now report higher rates than women, a shift from prior years.
AARP national loneliness survey, 2025Of seniors live entirely alone
More than 14.7 million people. Living alone isn't the same as being lonely, but it strongly raises the odds, especially without a consistent point of daily contact.
U.S. Census Bureau & retirement research aggregatesAmericans are family caregivers
Roughly 1 in 4 adults. The average caregiver spends 25 hours a week on it, and 71% report financial strain trying to hold it together.
AARP & National Alliance for Caregiving, "Caregiving in the US," 2025| What long-distance caregivers report | Compared to nearby caregivers |
|---|---|
| Physical strain | Measurably higher |
| Financial strain | Measurably higher |
| Emotional strain | No significant relief from distance |
Source: Proximity, Care Values, and Caregiving Strain, National Alliance for Caregiving / AARP survey analysis.
This isn't just uncomfortable. It's a real health risk.
Loneliness doesn't just feel bad, it behaves like a measurable, independent risk factor, the same category public health has spent decades treating seriously for smoking and obesity.
Higher mortality risk from social isolation
A landmark analysis found the mortality risk from weak social connection was comparable to, or larger than, smoking and heavy alcohol use, and exceeded the risk from physical inactivity and obesity.
Holt-Lunstad, Smith & Layton, PLoS Medicine, 2010; follow-up analysis, 2015Higher dementia risk
A UK Biobank study of nearly 500,000 adults found loneliness associated with a 60% increase in all-cause dementia risk.
Sutin et al., UK Biobank cohort studyLarge-scale cohort analysis tracking loneliness alongside health outcomes over time in a nearly 500,000-person UK dataset, one of the largest of its kind.
Higher Alzheimer's / vascular dementia risk
Across more than 600,000 people in 21 studies, loneliness independently raised these risks, even after accounting for depression and social isolation separately.
Meta-analysis, Nature Mental Health, 2024Increased all-cause mortality
Loneliness (26%), social isolation (29%), and living alone (32%) each independently raised mortality risk, even controlling for other factors like smoking and depression.
Holt-Lunstad et al., Perspectives on Psychological Science, 2015Obesity-equivalent risk
Follow-up research found the mortality risk from loneliness and isolation was roughly equivalent to the risk associated with severe (Grade 2-3) obesity.
Holt-Lunstad et al., 2015Worth being straight about: this comparison has been challenged. A 2021 UK analysis found smoking was actually a stronger individual predictor of mortality than loneliness in their specific dataset. The comparison holds up broadly across most research, but it isn't perfectly settled science.
Not a theory. A tested format.
This is the part that shaped Peace Buddy directly. Researchers have tested what kind of companionship actually reduces loneliness, and the answer points at something very specific.
The exact format Peace Buddy is built around
Students were paired one-on-one with older adults for a 30-minute call, once a week, for 8 weeks, entirely remote, by phone or video. No tasks, no agenda, just real conversation.
80% of participants reported an improved sense of well-being, and described feeling safer, more confident, and less bored.
Contactless Intergenerational Befriending Study, 2022Video calls outperform every other remote format
A review of 13 randomized controlled trials found video-delivered companionship produced a stronger loneliness reduction than phone calls or messaging.
Systematic review & meta-analysis, 2022One dedicated person beats a group program
The same review found individual, one-on-one formats outperformed group-based programs, directly supporting a single consistent companion over rotating help.
Systematic review & meta-analysis, 2022You don't need a clinician for this to work
A trial using trained laypeople, not therapists, produced loneliness reductions that held up a full 12 months later. Consistency mattered more than credentials.
HEAL-HOA Randomized Controlled TrialStructured, repeated contact is what makes it last
Weekly structured calls sustained over months showed lasting effects; one-off or occasional contact tended to fade quickly once it stopped.
HELPeN Telephone-Call Program, RCTThis is the research basis for pairing the weekly call with daily lighter touches in between, rather than relying on one conversation a week alone to carry the whole relationship.
Social support interventions work broadly
A meta-analysis of 19 randomized trials found social support interventions produced a statistically significant reduction in loneliness among community-dwelling older adults.
Meta-analysis, Frontiers in Aging, 2025Even short remote programs move the needle
A separate intergenerational befriending program using 30-minute weekly calls over 8 weeks by phone or video reduced both loneliness and boredom in older participants.
Intergenerational befriending study, JMIR, 2022This has already worked, at a billion-dollar scale
Peace Buddy isn't the first company to bet on companionship as healthcare. A company built on a lighter version of this idea reached a $1.4 billion valuation, and their own outcome data backs up why.
| Outcome measured | Result |
|---|---|
| Emergency department visits | 20% reduction |
| Hospital readmissions | 11% reduction |
| Primary care visit rate | 19% increase |
| Severely lonely members improving a category | 60% of participants |
Source: Papa Inc. claims-based outcomes studies with Medicare Advantage health plan partners, 2022–2024. Peace Buddy is a separate, independent company; this data is cited as evidence that companionship-based intervention produces measurable outcomes at scale.