Alzheimer's & Dementia

Alzheimer’s disease is an irreversible, progressive brain disorder that slowly destroys memory and thinking skills. Alzheimer’s is the most common cause of dementia among older adults. Dementia is the loss of cognitive functioning—thinking, remembering, and reasoning—and behavioral abilities to such an extent that it interferes with a person’s daily life and activities.

Alzheimer’s Disease | Definition, Causes, Diagnosis & Treatment

Alzheimer’s Disease (AD) is the most common form of dementia worldwide (60-70% of all dementia cases) and is a progressive neurodegenerative disorder.

Mixed Dementia Symptoms and Diagnosis

AAM - Genetics of Alzheimer's

AAM - The Search for a Cure to Alzheimer's

Alzheimer's Disease and Sleep Disruption

Childhood Dementia Causes

Dementia Symptoms

Alzheimer's Disease Prevention

Is Alzheimer's Disease Transmissible?

Types of Alzheimer's Disease

Alzheimer’s tangles and plaques: what’s the difference?

Alzheimer’s Disease and Calcium Supplements

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Omega-3 and Alzheimer’s Disease

Do Antioxidants Benefit Patients with Alzheimer’s and Parkinson’s?

What Causes Dementia?

Designing Dementia-Friendly Environments

Does Depression and Anxiety Increase the Risk of Dementia?

Dancing Through Dementia: How Movement Aids Memory and Mood

Dementia Prevention

Does Herpesvirus Cause Alzheimer's?

Aromatherapy for Dementia

Alzheimer's Disease and the Microbiome

Dementia Treatment

Dementia Diagnosis

Alzheimer's Disease Epidemiology

Migraines and Dementia

Alzheimer’s Disease and Gingko Biloba

Mixed Dementia Prevention and Treatment

Alzheimer's Disease Symptoms

Amyloid Cascade Hypothesis

Mythbusting: Misconceptions in Dementia

Does Type 2 Diabetes Increase the Risk of Alzheimer’s Disease?

What are Amyloid Plaques?

Gender and Alzheimer’s Risk

Can Statins Protect Against Alzheimer’s Disease?

Antidepressants and Dementia: Is There a Link?

Can Happiness Protect You from Dementia?

Parkinson's Compared to Dementia with Lewy Bodies (DLB)

What is Mixed Dementia?

Alzheimer's and Veganism

Inflammation and Alzheimer's Disease

AAM - Air pollution and Alzheimer's

Alzheimer's Disease Questions

Alzheimer's Disease Diagnosis

Integrated PET/MR for Alzheimer’s Disease

Pollution and Alzheimer's

Antibody Research and Alzheimer’s Disease

Alzheimer's Disease Treatments

Stress and Alzheimer's Disease

Dementia with Lewy Bodies

Alzheimer's Disease Causes

Does Type 2 Diabetes Increase the Risk of Alzheimer’s Disease?

Differences Between Alzheimer's and Dementia

Coconut Oil and Dementia

Transcutaneous Electrical Nerve Stimulation for Dementia

Childhood Dementia Signs and Symptoms

What is Dementia?

Diet and Alzheimer's Disease

Stem Cell Therapy for Alzheimer's

Bright Light Therapy and Dementia

Biomarkers for Alzheimer's Disease

Latest Alzheimer's & Dementia News and Research

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.

4 Aug 2026

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.

4 Aug 2026

Study 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.

3 Aug 2026

Daily social connections may improve long-term health and cognition

Calling 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.

3 Aug 2026

New AI model generates detailed maps of aging in brain regions

USC researchers have developed an approach that uses artificial intelligence to generate detailed maps that highlight differences in how distinct parts of the brain age.

3 Aug 2026

Gut 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.

3 Aug 2026

Persistent 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.

2 Aug 2026

Researchers propose new framework to define clinical obesity

A new approach to defining obesity could help physicians better determine which patients need more intensive treatment by focusing on the effects of excess adiposity on organs and tissues rather than relying primarily on whether a person meets a set of metabolic risk thresholds.

31 Jul 2026

Discovery 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.

29 Jul 2026

Early-life sugar restriction may reduce dementia risk later

Consuming 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.

29 Jul 2026

Overactive brain immune response linked to rare, severe genetic epilepsy

An 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.

29 Jul 2026

A closer look at Parkinson’s brains finds tau where standard tests saw little

Researchers used single-molecule and super-resolution imaging to profile protein aggregates across six brain regions from 29 post-mortem donors, detecting high-intensity phosphorylated tau aggregates in the Parkinson’s disease putamen despite negligible conventional tau staining. PD cases with dementia showed greater tau burden than those without dementia, while the assay did not detect a PD-specific population of nanoscopic alpha-synuclein aggregates.

29 Jul 2026

THC and CBD combination rapidly reduces advanced dementia agitation

A combination of CBD and THC rapidly and significantly reduces agitation in hospice-eligible people with dementia, suggest topline results from the Phase 2 LiBBY (Life's End Benefits of cannaBidiol and tetrahYdrocannabinol) clinical trial.

28 Jul 2026

Can Alzheimer's genes predict who becomes a SuperAger?

A study on SuperAgers shows exceptional memory isn't solely due to lower Alzheimer's genetic risk, highlighting the role of biological and lifestyle factors.

28 Jul 2026

Blood tests improve Alzheimer's detection in Down syndrome patients

New blood tests that detect early changes associated with Alzheimer's disease are making diagnosis easier and accessible to more patients, since they are less invasive than the brain scans or spinal taps typically used for a definitive diagnosis.

27 Jul 2026

Signals traveling from the gut through the vagus nerve help form memories

When French writer Marcel Proust famously recalled his childhood from the taste of a Madeline cookie, his stomach may have done some of the work.

27 Jul 2026

UC Davis researcher receives grant to study perceived cognitive aging

University of California, Davis Professor of Neurology Sarah Tomaszewski Farias has been awarded a $3.3 million five-year grant from The National Institute on Aging to study if cultural differences affect how people perceive cognitive changes as they age.

27 Jul 2026

Amyloid beta misfolding predicts Alzheimer's years before symptoms appear

Widely used Alzheimer’s biomarker P-tau 217 reliably detects the disease only at the clinical stage. The protein misfolding of amyloid beta indicates an increased risk years earlier.

27 Jul 2026

New blood protein biomarkers estimate timing of ALS symptoms

Months to several years before amyotrophic lateral sclerosis (ALS) symptoms arise, levels of certain blood proteins may dramatically shift.

27 Jul 2026

AI mental health chatbots feel empathetic, but safety evidence still lags

Immune dysregulation may contribute to depression, schizophrenia, bipolar disorder, and anxiety through chronic inflammation, altered neuroimmune signaling, genetic susceptibility, and stress-related epigenetic changes. Evidence also suggests that biologically defined patient subgroups may benefit from more precise, immune-informed approaches to diagnosis and treatment.

27 Jul 2026