An exploratory study of older adults in Taiwan has found a link between heart rhythm patterns and mild cognitive impairment (MCI). Researchers looked at how the cardiovascular system responds to acute cognitive stress, such as completing a mental task.
By comparing people with healthy cognition to those with MCI, the study found that the MCI group showed less consistent and more fragmented heart responses. Specifically, the way their heart rhythms coordinated during the task was less organized than the healthy group.
Because this was a small, cross-sectional study, it cannot prove that these heart changes cause cognitive decline. The researchers also could not include people with more advanced dementia in this specific analysis.
While these findings are early, they suggest that tracking heart rhythm patterns might one day help doctors better identify the early stages of cognitive aging through simple, non-invasive screenings in the community.
