Loneliness may affect how well older adults remember things. Still, it does not appear to accelerate the overall rate of memory decline, according to a large European study published in the journal Ageing and Mental Health. The analysis covered about 10,000 people aged 65 to 94 from the Survey of Health, Ageing and Retirement in Europe (SHARE) between 2012 and 2019, using self‑reported loneliness questions and repeated memory tests.
Participants who reported high loneliness scored lower on memory assessments at the start of the study, especially on immediate and delayed recall, indicating that loneliness is linked to poorer baseline memory performance. However, the pace of memory decline over time from the third to the seventh year of follow‑up was similar in highly lonely and less lonely groups, suggesting loneliness does not accelerate the trajectory of cognitive ageing.
Those with higher loneliness were generally older, more often female, and more likely to report poorer health, depression, high blood pressure, and diabetes, all of which can independently influence brain function. Even after adjusting for these factors along with physical activity, social engagement, and other conditions, the pattern held: loneliness was associated with lower memory scores at baseline, but not with a steeper decline.
The researchers argue that clinicians should consider routine loneliness screening as part of cognitive assessments in older adults, since early identification may allow for targeted social support or memory‑focused interventions. At the same time, public‑health efforts are increasingly focusing on reducing social isolation through community programmes, regular check‑ins, and structured group activities, which could help maintain better memory performance and overall well-being in later life.
