Persistent financial hardship tracks with poorer memory and processing speed by midlife
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 Gut microbiome shifts may begin before Alzheimer’s symptoms appearGut microbiome shifts may begin before Alzheimer’s symptoms appear
 
A narrative review links reduced SCFA-producing gut bacteria and altered microbial metabolism with Alzheimer’s disease, while early evidence suggests similar changes may appear before cognitive symptoms. Mediterranean, DASH, MIND, and prudent diets are associated with beneficial microbial profiles, but direct evidence connecting diet, the microbiome, and amyloid pathology remains limited.
 
 
 Persistent financial hardship tracks with poorer memory and processing speed by midlifePersistent financial hardship tracks with poorer memory and processing speed by midlife
 
Researchers linked persistent low income and financial hardship across early and mid-adulthood to poorer processing speed and verbal memory at age 53 in a British birth cohort. Neuroimaging suggested greater vulnerability to later brain atrophy among men, people from disadvantaged childhood backgrounds, and APOE-ε4 carriers, although these subgroup findings require replication.
 
   Daytime cortisol patterns track cognitive decline but not Alzheimer’s disease riskDaytime cortisol patterns track cognitive decline but not Alzheimer’s disease risk
 
In 3,895 older adults, moderate daytime cortisol variability was associated with better cognition and slower decline, while the highest daily cortisol exposure was linked to poorer cognition and faster decline. Cortisol patterns differed between Black and White participants, but their relationships with cognition were similar, and none predicted incident Alzheimer’s disease.
 
   Study links lower vitamin D to mood and cognitive health in adults over 85 with diabetesStudy links lower vitamin D to mood and cognitive health in adults over 85 with diabetes
 
Researchers studying 188 adults aged 85 years or older with type 2 diabetes found the lowest serum 25(OH)D concentrations among those with both depressive symptoms and mild cognitive impairment. Lower levels remained associated with having both conditions after adjustment for selected factors, but the cross-sectional study cannot establish causation or a benefit from supplementation.
 
   Discovery of calcium channel mechanism offers clues for brain disorder treatmentsDiscovery of calcium channel mechanism offers clues for brain disorder treatments
 
DGIST (President Kunwoo Lee) announced that a research team led by Professor Byung Chang Suh of the Department of Brain Sciences has, for the first time, uncovered a novel molecular mechanism that regulates the "N-type voltage-gated calcium channel (CaV2.2)," which plays a critical role in neural signal transmission.
 
 How Tau is transforming the future of Alzheimer’s diagnosis and treatment
 
How Tau is transforming the future of Alzheimer’s diagnosis and treatmentDiscover how Tau biomarkers are transforming Alzheimer's diagnosis and treatment, enabling earlier detection
 
 
 New AI-based method could improve detection and classification of brain tumors from MRI scans
 
New AI-based method could improve detection and classification of brain tumors from MRI scansResearchers have developed a new artificial intelligence-based method that could significantly improve the detection and classification of brain tumors from MRI scans, achieving higher accuracy than conventional diagnostic systems.
 
 
 Daily social connections may improve long-term health and cognition
 
Daily social connections may improve long-term health and cognitionCalling a friend after a long day. Showing up to a neighbor's dinner when you'd rather stay home. Lingering a little longer in a conversation that didn't need to last.
 
 
 AI model can use routine sleep study data to identify patients' long-term health risks
 
AI model can use routine sleep study data to identify patients' long-term health risksA novel AI model can use information collected during routine sleep studies to identify patients' long-term health risks, according to a new study published in Nature Communications.
 
 
 New AI model generates detailed maps of aging in brain regions
 
New AI model generates detailed maps of aging in brain regionsUSC researchers have developed an approach that uses artificial intelligence to generate detailed maps that highlight differences in how distinct parts of the brain age.
 
 
 Early-life sugar restriction may reduce dementia risk later
 
Early-life sugar restriction may reduce dementia risk laterConsuming less sugar in utero before birth and during the first one to two years of life was associated with a lower risk of developing dementia later in life, according to a study published July 29, 2026, in Neurology, the medical journal of the American Academy of Neurology.
 
 
 Community gathering places cut cognitive risk for non-exercising seniors
 
Community gathering places cut cognitive risk for non-exercising seniorsCommunity gathering places, where residents lead group activities, have been promoted across Japan as part of long-term care prevention efforts to extend healthy life expectancy.
 
 
 New gene editing tool reduces Huntington's symptoms in mice
 
New gene editing tool reduces Huntington's symptoms in miceA gene editing tool designed to precisely rewrite the gene that causes Huntington's disease reduced toxic protein fragments and symptoms associated with the disease in mice, researchers at the University of Illinois Urbana-Champaign report.
 
 
 Overactive brain immune response linked to rare, severe genetic epilepsy
 
Overactive brain immune response linked to rare, severe genetic epilepsyAn overactive immune response in the brain may play a role in Dravet Syndrome, a rare and severe genetic epilepsy that typically begins in infancy, according to Weill Cornell Medicine researchers.
 
 
 Exercise helps protect Hispanic adults from late life cognitive decline
 
Previous studies have examined the associations between adherence to LS7 and cognitive outcomes, with findings suggesting that higher LS7 scores are associated with better cognitive performance, reduced dementia risk and improved brain health.
 
 
 Comedy videos help people recognize subtle positive facial expressions
 
In everyday life, the ability to read facial expressions plays a vital role in social communication, as it reveals a speaker's underlying emotions, intentions, and psychological state.
 
 
 Soy lysolecithin reduces salt-induced hypertension and cognitive decline
 
High salt (HS) intake is a major global health concern, closely linked to hypertension and growing evidence of cognitive and emotional decline.
 
 
 URI professor wins $1.5M grant to study cerebral amyloid angiopathy
 
A $1.5M grant has been awarded to William Van Nostrand, co-executive director of the University of Rhode Island's George & Anne Ryan Institute for Neuroscience and professor of pharmaceutical and biomedical sciences in the URI College of Pharmacy, to study cerebral amyloid angiopathy (CAA), a disease prevalent in the elderly population and commonly found in patients with Alzheimer's disease.
 
 
 New 3D brain tissue model accelerates Alzheimer's drug development
 
How can Alzheimer's research be made faster, better, and more effective? After decades of intensive research worldwide and despite recent therapeutic advances, scientists have not managed to fully arrest the progress of the disease.
 
 
 Study connects late-life psychosis to abnormal tau protein buildup
 
Hallucinations and delusions that appear for the first time in midlife or later are often treated as psychiatric symptoms whose biological cause is unclear.
 
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