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Newest story: 11 Nov 2026

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Nature Aging · 10 Nov 2026 · Aging

In Alzheimer brain tissue and in 5xFAD mice, mitochondria-derived vesicles carrying Ggt1 were tied to Alzheimer-like changes in other mice

Nature Aging published a study online on 10 November 2026. Yun Li, Xiaohuan Xia, Yiyan Sun, Kailing Jia, and colleagues report that mitovesicles, a mitochondria-derived subset of extracellular vesicles, were enriched in brain tissue from people with Alzheimer disease and from 5xFAD mice. Giving 5xFAD brain mitovesicles to wild-type mice was tied to Alzheimer-like behavioral and pathological changes, and it accelerated disease progression in Alzheimer-model mice. Release of the vesicles tracked mitochondrial respiratory metabolism. Blocking that release was tied to fewer Alzheimer-like phenotypes in the mice. Proteomics found Ggt1 highly enriched in the 5xFAD vesicles. Lowering Ggt1 expression and activity was tied to fewer Alzheimer-like phenotypes in 5xFAD mice and to a slower course after the vesicles were given. The abstract does not give a sample size or a p value. This is mouse work plus stored human brain tissue. It is not a therapy. DOI 10.1038/s43587-026-01263-3. Not medical advice.

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cognition

GeroScience · 10 Nov 2026 · Aging

In 50 captive zebra finches followed until natural death, a faster epigenetic pace tracked a shorter lifespan, and a one-time age gap did not

GeroScience published a longitudinal study online on 10 November 2026. Marianthi Tangili, Per J. Palsboll, and Simon Verhulst measured 100 whole-genome methylomes from 50 captive adult zebra finches, Taeniopygia castanotis, and followed the birds until natural death. Methylation fell across the genome with age, and it fell faster in birds with shorter lifespans. 29 CpG sites changed significantly with age. A clock built from 119 CpG sites estimated chronological age with a median absolute deviation of 0.68 years, 8.2 percent of the maximum lifespan in this set. Females raised in large broods, which have shorter lifespans, showed greater epigenetic age acceleration. That one-time acceleration did not predict lifespan or remaining lifespan. The within-bird rate of change did: faster epigenetic aging lined up with a shorter lifespan. A separate clock trained to predict post-sampling lifespan predicted remaining lifespan. These are birds, not people. DOI 10.1007/s11357-026-02646-5. Not medical advice.

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longevity

Neurology · 10 Nov 2026 · Aging

In 5,794 adults in the Mayo Clinic Study of Aging, each extra year of gait age lined up with a 7 percent higher yearly chance of later cognitive impairment

Neurology published a cohort analysis online on 10 November 2026. The Mayo Clinic Study of Aging contributed 19,637 walk trials from 5,794 adults in Olmsted County, Minnesota, recruited from 2007 to 2025, with no known gait disorder. 49 percent were female. Mean age was 78 years (standard deviation 8). A model estimated gait age from the walk. The gait age gap was gait age minus chronological age. Stability measures drove gait age. A larger gap lined up with worse cognitive and functional status. In follow-up, each year that gait age sat above chronological age was tied to a 7 percent higher yearly chance of moving from normal cognition to cognitive impairment. The gap separated normal cognition from impairment better than baseline velocity. Print issue date is listed as 8 December 2026. One region. DOI 10.1212/WNL.0000000000218766. Not medical advice.

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