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Apoe E4

All articles tagged with #apoe e4

Omega-3 Supplements Could Accelerate Cognitive Decline in APOE ε4 Carriers, Study Suggests
science24 days ago

Omega-3 Supplements Could Accelerate Cognitive Decline in APOE ε4 Carriers, Study Suggests

An observational analysis of the ADNI cohort (800+ older adults, about half APOE ε4 carriers) found that those taking omega-3 supplements showed faster cognitive decline on MMSE and related tests than non-users, with no clear link to Alzheimer's brain biomarkers; the researchers caution that this is not causal and the sample isn’t representative, highlighting a need for nuanced, dose- and context-dependent research. While some reviews hint at low-dose benefits, high doses might be harmful, suggesting omega-3 should be approached with care and preferably sourced from whole foods until more evidence clarifies its brain effects.

via ScienceAlert|
#alzheimers-disease#apoe-e4#cognitive-decline
Aging Memory Decline Tied to Widespread Brain Changes Across Regions
science3 months ago

Aging Memory Decline Tied to Widespread Brain Changes Across Regions

A large multicohort study of 3,737 cognitively healthy participants with 10,343 MRI scans and 13,460 memory assessments finds episodic memory declines with age are linked to broad brain tissue loss rather than a single region, with stronger effects after age 60 and more pronounced in APOE ε4 carriers; results imply aging-related cognitive decline shares mechanisms with neurodegenerative diseases and may require early, multi-area interventions across the brain.

via ScienceAlert|
#aging#apoe-e4#hippocampus
Genetic edge helps super agers stay mentally sharp into their 80s
health-and-medicine4 months ago

Genetic edge helps super agers stay mentally sharp into their 80s

A Vanderbilt-led study of 18,080 participants finds that people over 80 with unusually strong memory (super agers) carry fewer APOE-ε4 Alzheimer’s risk genes and more APOE-ε2 protective variants than their peers. Super agers were 68% less likely to carry ε4 than 80+ individuals with Alzheimer's and 19% less likely than cognitively normal peers, while they were 28% more likely to carry ε2, and 103% more likely than those with Alzheimer’s dementia to have this protective variant. As the largest study of super agers to date, the findings suggest a genetic basis for exceptional cognitive aging and may guide future dementia resilience research.

via ScienceDaily|
#alzheimers-disease#apoe-e2#apoe-e4
Genetic Variants Linked to Dementia Resilience in Superagers, Study Finds
science4 months ago

Genetic Variants Linked to Dementia Resilience in Superagers, Study Finds

In a study of 18,080 participants (1,623 superagers aged 80+, 8,829 with Alzheimer's, 7,628 controls), researchers found that superagers are less likely to carry the APOE-e4 Alzheimer's-risk variant and more likely to carry APOE-e2, suggesting genetics contribute to exceptional aging and reduced dementia risk. The pattern held in non-Hispanic White groups, highlighting a potential genetic basis for dementia resilience, though lifestyle and other factors remain important, and more diverse research is needed.

via ScienceAlert|
#alzheimers-disease#apoe-e2#apoe-e4