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Researcher: Social isolation linked to a roughly 50% difference in survival odds
Summary
Dr. Julianne Holt-Lunstad told attendees the global synthesis of social‑connection research found lacking social ties raises mortality risk comparable to major physical risk factors; she urged a "social-in-all-policies" approach and earlier life-course investment to prevent downstream harms.
Dr. Julianne Holt‑Lunstad, a professor of psychology and neuroscience at Brigham Young University, told the Symposium on Aging that global evidence shows social connection is a major determinant of longevity and health. “We found that being socially connected was associated with a 50 percent increase odds of survival,” she said, and she compared the magnitude of the effect to other widely accepted risk factors such as smoking and air pollution.
Holt‑Lunstad urged policymakers to treat social connection as a public‑health priority and to evaluate existing rules for unintended barriers to social ties. “We need a whole‑of‑society approach,” she said, noting the Office of the Surgeon General and the World Health Organization now recognize social connection as a health factor. She recommended interventions across people, places and prosperity — from infrastructure that makes walking and local interaction easier to workplace policies that enable volunteering and caregiving.
The researcher also stressed prevention across the life course: investments to build social capital early reduce costs and improve quality of life later. Her comments framed later panels that discussed how health systems, counties and community organizations might translate the evidence into programs for older adults.
