Today's Topic 👉 Social Wellness

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AT A GLANCE

• Loneliness is a mortality risk factor. Social isolation increases mortality risk by 32%. Loneliness increases it by 14%. Both independently, across more than 2.2 million people studied. ⁽²⁾

• Isolation and loneliness are different. You can be socially isolated without feeling lonely. You can feel lonely in a crowd. Both are problems. Neither is the same as the other. ⁽³⁾

• Quality beats quantity. The number of relationships matters less than their depth and diversity. One close, reciprocal relationship is more protective than a large shallow network. ⁽⁴⁾

Half of U.S. adults report feeling lonely.

That’s not a mood statistic. It’s a health statistic.

The U.S. Surgeon General declared loneliness a public health epidemic in 2023. The evidence behind that declaration has been building for decades.

Here’s the number that stops people: lacking social connection increases mortality risk as much as smoking 15 cigarettes a day. ⁽¹⁾

Not sitting too much. Not eating poorly. Smoking 15 cigarettes a day.

A 2023 review of 90 studies across more than 2.2 million people confirmed it:

• Social isolation increases risk of dying early by 32%.

• Loneliness increases it by 14%.

• Both independently. ⁽²⁾

But here’s the distinction the research keeps making that most people miss:

Isolation and loneliness are not the same thing.

• Isolation is objective — the actual number and frequency of social contacts.

• Loneliness is subjective — the gap between the connection you want and the connection you have.

You can be isolated without feeling lonely. You can feel profoundly lonely in a full room. ⁽³⁾

Both predict poor health outcomes. But they require different responses.

And quality matters more than quantity. A 1979 study that launched the field found that what predicted mortality wasn’t the number of social contacts — it was the diversity and depth of the network. ⁽⁴⁾

SOURCES

1. Office of the Surgeon General. Our Epidemic of Loneliness and Isolation. U.S. Department of Health and Human Services; 2023.
2. Wang, F., et al. (2023). Social isolation, loneliness and mortality. Nature Human Behaviour, 7, 1339–1351.
3. Holt-Lunstad, J., et al. (2015). Loneliness and social isolation as risk factors for mortality. Perspectives on Psychological Science, 10(2), 227–237.
4. Berkman, L.F., & Syme, S.L. (1979). Social networks, host resistance, and mortality. American Journal of Epidemiology, 109(2), 186–204.

FEATURED RESOURCE

Our Epidemic of Loneliness and Isolation

U.S. Surgeon General’s Advisory on the Healing Effects of Social Connection and Community, 2023 — free, publicly available

The most comprehensive government review of the social connection evidence ever published. Covers the mortality data, the mechanisms, and a six-pillar national framework. Worth reading even if you just read the executive summary.

MORE ON THE TOPIC

Want the full breakdown? The full Smarter Wellness Weekly article covers:

• 3 elements of social connection (structure, function, quality)

• The biological mechanisms linking isolation to mortality

• Does digital connection count?

• How to audit your own social health without overhauling your life

Available at → https://www.appliedwellness.co/media/smarter

ABOUT THE CONTRIBUTOR

Brian S. Dye, Ed.D., is the founder of Applied Wellness, an evidence-based wellness education platform that helps people access, understand, and apply credible wellness information.

Learn more → appliedwellness.co

Next from Brian 👉 Intellectual Wellness. Curiosity as a health behavior, and what the research says about keeping the mind sharp.

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