Original title: APOE4 allele modifies the effect of lifestyle interventions on cognition
APOE4A version of the APOE gene associated with higher risk of dementia and earlier onset. is a gene variant linked to a higher risk of dementia. Researchers combined results from three trials of programs that aimed to change several lifestyle factors. Among people at elevated dementia risk, the programs improved overall cognition more for APOE4 carriers than for non-carriers after 12 months; the difference was borderline at 24 months. The stronger pattern seemed to involve executive functionMental skills used to plan, focus, and manage tasks., the skills used to plan and manage tasks.
Imagine a group of people learning a new routine for keeping a busy kitchen running. Some find the planning steps harder than remembering where things are. In this paper, the routine stands for lifestyle changes, and the kitchen tasks stand for different thinking skills; the people with APOE4 showed a stronger benefit, especially in planning and managing tasks.
People with APOE4 have a higher risk of dementia and earlier onset. These results suggest that lifestyle programs may be especially useful for APOE4 carriers who already have mild cognitive impairment or other signs of elevated risk.
The abstract reports results for people aged 60–85 with elevated dementia risk, not for everyone. The difference between APOE4 carriers and non-carriers is significant at 12 months but only borderline at 24 months. The abstract does not establish which specific lifestyle changes account for the benefit or whether the effects prevent dementia.
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APOE4 allele modifies the effect of lifestyle interventions on cognition — Jenni Lehtisalo, Ari Solomon, Esko Levälahti et al. — Communications Medicine — doi:10.1038/s43856-026-01948-1
Abstract licence: CC BY
Explanation generated by Synthesis from the abstract — it is not the original paper.