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Novel markers of brain blood flow and oxygenation may offer early clues to Alzheimer’s risk

Researchers found that noninvasive measures of brain blood flow and oxygenation are associated with hallmark brain changes in older adults with and without cognitive impairment. Higher values on these indicators were linked to lower levels of amyloid plaques and larger hippocampal volume, indicating a lower risk of Alzheimer's disease.

SourceKeck School of Medicine of USC·TypeExperimental study·DateFeb 23, 2026

Discover a new ‘cellular target’ to understand and treat alzheimer’s disease

Researchers have identified astrocytes as a promising cellular target for Alzheimer's therapy. Senescent astrocytes, which lose functional capacity, are found in Alzheimer's patients' brains, leading to neuronal damage and inflammation. The study opens an avenue for therapeutic strategies like senolytic drugs.

SourceUniversity of Malaga·JournalJournal of Neuroinflammation·TypeExperimental study·DateFeb 16, 2026

Cumulative lead exposure linked to increased Alzheimer’s and dementia risk, University of Michigan study finds

Researchers at the University of Michigan School of Public Health found a strong association between bone lead concentrations and increased risk of dementia. The study analyzed data from over 30 years of follow-up and estimated cumulative lifetime exposure to lead using machine learning algorithms.

SourceUniversity of Michigan School of Public Health·JournalAlzheimer’s & Dementia·DateFeb 12, 2026

How your lifestyle can affect your risk of dementia

A new study from Lund University finds that modifiable risk factors like smoking and high blood pressure can damage brain blood vessels and increase dementia risk. Living a healthy lifestyle may help delay symptom onset in Alzheimer's disease.

SourceLund University·JournalThe Journal of Prevention of Alzheimer s Disease·TypeCase study·DateJan 28, 2026

DAC expands early detection implementation network to advance early detection of cognitive impairment in primary care settings

Two U.S. healthcare systems, Tufts Medicine and University of Utah Health, will implement the DAC-SP Early Detection Blueprint across ten primary care sites to improve early detection of cognitive impairment and Alzheimer's disease. The initiative aims to refine a replicable model for early detection that can be adopted nationwide.

New study redefines our understanding of how memory works

Researchers found no difference in neural activity between successful semantic and episodic retrieval, challenging long-standing research tradition. This overlap suggests that the whole brain is involved in different types of memory, potentially leading to new interventions for diseases like dementia and Alzheimer's.

SourceUniversity of Nottingham·JournalNature Human Behaviour·TypeExperimental study·DateJan 27, 2026

People with obesity may have a higher risk of dementia

A new study published in The Journal of Clinical Endocrinology & Metabolism found a causal link between high body mass index (BMI) and dementia. High blood pressure was identified as a driving factor behind the increased risk. Researchers suggest that preventing or treating obesity and high blood pressure could help reduce dementia risk.

SourceThe Endocrine Society·JournalThe Journal of Clinical Endocrinology & Metabolism·DateJan 22, 2026

Autonomous AI agents developed to detect early signs of cognitive decline

Developed by Mass General Brigham researchers, the autonomous AI system achieves high accuracy in detecting cognitive impairment using routine clinical documentation. The system includes five specialized agents that critique each other and refine their reasoning, just like clinicians would in a case conference.

SourceMass General Brigham·Journalnpj Digital Medicine·TypeComputational simulation/modeling·DateJan 15, 2026

One in four older Americans with dementia prescribed risky brain-altering drugs despite safety warnings

Research finds that nearly one in four Medicare beneficiaries with dementia are prescribed potentially harmful medications linked to falls, confusion, and hospitalization. Despite declines in prescribing rates, high levels of inappropriate prescribing persist among older adults with cognitive impairment.

SourceUniversity of California - Los Angeles Health Sciences·JournalJAMA·TypeData/statistical analysis·DateJan 12, 2026

Menopause hormone therapy does not appear to impact dementia risk

A comprehensive review of prior research found no evidence that menopause hormone therapy increases or decreases dementia risk in post-menopausal women. The study included data from over 1 million participants and analyzed the impact on mild cognitive impairment and Alzheimer's disease, with no significant association found.

SourceUniversity College London·JournalThe Lancet Healthy Longevity·TypeSystematic review·DateDec 22, 2025

Do natural disasters have long-term impacts on mortality in older adults?

A study analyzing Medicare claims data found that older adults who lived through Hurricane Harvey had a 3% elevated risk of dying within 1 year. Mortality risk was highest among those with chronic health conditions like Alzheimer's disease, and Black and Hispanic/Latino populations experienced higher mortality risks than other groups.

SourceWiley·JournalJournal of the American Geriatrics Society·DateDec 17, 2025

Concurrent frailty + depression likely boost dementia risk in older people

A large international study of 220,947 participants found that concurrent physical frailty and depression significantly increase the risk of dementia. The interaction between these two factors contributes approximately 17% to the overall risk, while individual associations were found for frailty (2.5 times higher risk) and depression (...

SourceBMJ Group·JournalGeneral Psychiatry·TypeObservational study·DateDec 16, 2025

Researchers develop AI Tool to identify undiagnosed Alzheimer's cases while reducing disparities

Researchers developed an AI tool to identify patients with undiagnosed Alzheimer's disease using electronic health records, addressing underdiagnosis and healthcare inequities. The model achieved sensitivity rates of 77-81% across diverse populations, promoting fairness while maintaining high accuracy.

FAU engineers decode dementia type using AI and EEG brainwave analysis

Researchers at Florida Atlantic University have developed a deep learning model that detects and evaluates Alzheimer's disease (AD) and frontotemporal dementia (FTD) using EEG brainwave analysis. The model achieved over 90% accuracy in distinguishing individuals with dementia from cognitively normal participants.

SourceFlorida Atlantic University·JournalBiomedical Signal Processing and Control·TypeComputational simulation/modeling·DateDec 10, 2025

Internet use may protect caregivers against loneliness

A study by NYU Rory Meyers College of Nursing found that older, unpaid caregivers who used the internet more often felt less lonely and coped better with stress. The researchers analyzed data from over 3,957 participants ages 65 and older, and discovered a buffering effect: internet use reduced loneliness in caregivers with health issues.

SourceNew York University·JournalJMIR Aging·DateDec 4, 2025

Hospital infections associated with higher risk of dementia

A new meta-analysis published in Aging-US found a significant association between hospitalization for infections and the risk of developing dementia. Adults hospitalized with infections were at an increased risk of all-cause dementia, especially after a single infection-related hospitalization, which can speed up cognitive decline.

SourceImpact Journals LLC·JournalAging-US·TypeNews article·DateNov 25, 2025

Metabolic roots of memory loss

Researchers identified biological markers of inflammation, liver stress, and early damage to brain cells in young adults with obesity. Low blood levels of choline, essential for liver health and long-term brain function, were also found. These findings suggest that metabolic stress and inflammation may begin far earlier than expected.

SourceArizona State University·JournalAging and Disease·TypeExperimental study·DateNov 25, 2025