Research

Research & Insights

Peer-reviewed findings on loneliness, friendship formation, and digital connection, synthesized into clear, actionable insights.

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Does Loneliness Raise Dementia Risk? What the Cohort Studies Say, and the One Number Everyone Misses

A meta-analysis of 21 cohorts and more than 600,000 people finds lonely adults are about 31 percent more likely to develop dementia. The obvious objection is that early dementia makes people lonely, not the reverse. The studies that separate persistent from passing loneliness, and that look at people decades before typical onset, offer the most useful answer, and it is not the headline number.

Sep 25, 2026 10 min read

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Should Introverts Act Like Extroverts? What Two Decades of Experiments Actually Show

Every experiment that asks people to behave more sociably finds the same thing: their mood goes up, introverts included. The disagreement is about the bill. One randomised trial found introverts paid for the boost in fatigue, negative feeling and a sense of being fake; another found no such cost. The difference between the two turns out to be instructive, and it points at something more useful than a verdict on introversion.

Sep 22, 2026 10 min read

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Is There Really a Male Loneliness Epidemic? What the Data Say When You Ask the Question Three Ways

A meta-analysis of nearly 400,000 people finds almost no gender difference in loneliness. A survey of 46,000 finds men lonelier, especially young men. A US poll finds the share of men with no close friends has risen fivefold. All three are right, because they are answering different questions. Here is how to tell them apart.

Sep 19, 2026 11 min read

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Why We Don't Reach Out to Old Friends (and What the Research Says Happens When We Do)

Nine in ten people can name a friend they still care about but have lost touch with. Fewer than a third will send a message even when handed the chance. New research explains the hesitation, and why the friend on the other end is far more pleased to hear from us than we predict.

Sep 12, 2026 14 min read

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The Science of Weak Ties: Why Small Talk With Strangers Matters

We build our social lives around close friends and family. But a body of research suggests the fleeting interactions we barely notice, with baristas, neighbors, and strangers, do more for our well-being than we assume.

Aug 27, 2026 10 min read

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Is Loneliness Contagious? What a Study of an Entire Social Network Found

A landmark analysis mapped loneliness moving through a real social network, reaching up to three degrees of separation. Here is what it found, and why researchers still argue about whether contagion is the right word.

Aug 12, 2026 11 min read

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The Loneliness Set Point: Why More Socializing Does Not Always Help

A 2025 study of 25,646 adults across 27 EU countries suggests each person has a unique threshold for social connection — beyond which more contact provides no further benefit.

Jun 7, 2026 11 min read

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The Architecture of Loneliness: How Your Neighborhood Shapes Your Social Life

Most loneliness interventions target individuals. But a growing body of research suggests that walkability, green space, and neighborhood amenities may be equally powerful levers for reducing isolation.

May 19, 2026 10 min read

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Can Doctors Prescribe Friendship? What the Evidence on Social Prescribing Actually Shows

England now makes 1.3 million social prescribing referrals per year. A deep look at what controlled studies, systematic reviews, and a 12-country comparison reveal about whether this works.

May 8, 2026 11 min read

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What Happens When You Actually Quit Social Media? The Experimental Evidence

Three meta-analyses of randomized controlled trials now exist on social media restriction. The results are real — and more complicated than either side of the debate wants to admit.

May 4, 2026 12 min read

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What Loneliness Does to Your Body: The Biology Behind Social Pain

Your body treats loneliness as a physical emergency. From brain scans showing social pain to gene expression changes in immune cells, the biology of disconnection is more concrete than most people realize.

Apr 25, 2026 11 min read

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Can AI Replace Human Connection? What the Research Actually Shows

AI companion apps have surged 700% in three years, promising to ease loneliness. Multiple new studies — including a four-week MIT/OpenAI controlled trial — suggest the reality is far more complicated.

Apr 22, 2026 12 min read

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Does Loneliness Cause Depression? What Five Lines of Evidence Actually Show

Lonely people are three times more likely to be depressed. But does loneliness cause depression — or just accompany it? A careful look at the strongest evidence, from 12-year cohort studies to genetic analysis.

Apr 20, 2026 11 min read

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When Money Keeps People Apart: The Research on Financial Strain and Social Isolation

New research reveals that two-thirds of Americans have skipped social events they couldn't afford — and most never told anyone why. What the evidence shows about the financial roots of loneliness.

Apr 12, 2026 10 min read

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What Actually Works to Reduce Loneliness? What 280 Studies Tell Us

A new meta-analysis of 280 studies reveals which loneliness interventions work, which don't, and why the answer is more complicated than "just go socialize."

Apr 4, 2026 11 min read