In a longitudinal analysis of 6,232 European adults aged 50 and older from SHARE waves 7–9, loneliness and social isolation predicted incident osteoarthritis, with difficulty rising from a chair accounting for a measurable portion of that association. Lower-limb functional capacity appears to be the pathway through which social disconnection translates into joint disease. The finding positions a simple physical test as an observable marker linking emotional state to musculoskeletal outcomes.
Key Points
- Loneliness predicted incident osteoarthritis across 12 European countries over four years
- Chair-rise difficulty mediated the loneliness–osteoarthritis association in 6,232 adults
- Lower-limb function links social disconnection to musculoskeletal disease progression
Longevity Analysis
Social disconnection operates as a physical exposure, not merely a psychological one — reduced movement, altered stress signaling, and diminished load-bearing capacity converge on joint tissue that depends on mechanical stimulus to remain healthy. Chair-rise difficulty offers a low-cost, repeatable signal that can be tracked before radiographic changes appear, making it useful for identifying decline while it remains reversible. Addressing isolation and preserving lower-limb strength through consistent loading belong in the same intervention, since each reinforces the other.
Original published by SAGE Research on Aging, by Asima Karim, M. Azhar Hussain, Rizwan Qaisar1Department of Basic Medical Sciences, College of Medicine, 59105University of Sharjah, Sharjah, United Arab Emirates2Iron Biology Research Group, Research Institute of Medical and Health Sciences, 59105University of Sharjah, Sharjah, United Arab Emirates3Department of Finance and Economics, College of Business Administration, 59105University of Sharjah, Sharjah, United Arab Emirates4Department of Social Sciences and Business, Roskilde University, Roskilde, Denmark5Cardiovascular Research Group, Research Institute of Medical and Health Sciences, 59105University of Sharjah, Sharjah, United Arab Emirates6Space Medicine Research Group, Research Institute of Medical and Health Sciences, 59105University of Sharjah, Sharjah, United Arab Emirates.