BMC Public HealthNov 4, 2026, 11:09 GMT

Stroke linked to cognitive decline in English adults 50 and older

English participants aged 50 and older who reported new strokes declined 0.190 cognitive-test points per year faster than those who remained stroke-free.

Paper by Mingdong Li, Kewei Xiao, Chaoli Song, Shengrong Long · Tongji Hospital

Fig. 1. Cognitive trajectories by incident stroke status in CHARLS and ELSA.Cognitive trajectories by incident stroke status in CHARLS and ELSA.Li et al.

Our read

Populations

Studied:: Cohort study of 5,713 English adults aged 50 and older, against stroke-free participants
What changed:: Thinking skills declined approximately 0.19 points per year faster in English stroke survivors than in stroke-free participants
The catch:: Cognitive decline could precede stroke; pre-stroke observations were included in the stroke group's decline
Why it’s aging research:: Biological age, frailty, function, multimorbidity or death.

Editor of record: Boris Djordjevic · AgingResearch.News

Paper

Chinese adults aged 45 and older (11,569; 52.0% women) and English adults aged 50 and older (5,713; 55.2% women) took part in an observational cohort analysis. None reported a stroke at baseline. Follow-up lasted up to 7.2 years in China and 13.0 years in England. Tests assessed word recall and awareness of the date; Chinese participants also copied a drawing.

Stroke was associated with an additional decline of 0.068 test points per year in China and 0.190 in England compared with remaining stroke-free, after adjustment for health and demographic factors. In England, higher family-connection scores—measuring contact with children, relatives and friends—were associated with less stroke-related decline. The corresponding pattern for support from children and grandchildren in China was not statistically significant.

Why it matters

Cognitive health after stroke is a concern as people age. The authors called for investigating social relationships as a potentially modifiable factor in post-stroke cognitive health.

Caveats

Health or social differences not captured by the analysis could have contributed to the associations. After matching stroke and stroke-free participants on measured characteristics, the stroke–decline link remained statistically significant in England but weakened and was no longer statistically significant in China; the English test of whether family connections moderated that link also no longer reached statistical significance.

From the paper

Result

… stroke was associated with significantly faster cognitive decline in both cohorts (CHARLS: β = −0.068 points/year, 95% CI − 0.123 to − 0.013, p = 0.016; ELSA: β = −0.190, 95% CI − 0.229 to − 0.152, p < 0.001); after propensity-score matching …

Results

Limitation

First, reliance on self-reported stroke status and social support introduces potential reporting bias.

Study limitations and future research directions

Quoted word for word from the full text on link.springer.com.