Dementia

Dementia is not a specific disease. It is a descriptive term for a collection of symptoms that can be caused by a number of disorders that affect the brain. People with dementia have significantly impaired intellectual functioning that interferes with normal activities and relationships.

What Causes Dementia?

Dementia occurs due to loss of brain function that occurs with certain diseases. It can affect several brain functions such as memory, thinking, language, planning, behavior and judgement. Dementias are usually progressive and worsen with time. They usually are degenerative and non reversible.

Aromatherapy for Dementia

Mixed Dementia Prevention and Treatment

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

Mixed Dementia Symptoms and Diagnosis

Differences Between Alzheimer's and Dementia

Dementia Symptoms

Dementia Diagnosis

What is Mixed Dementia?

Childhood Dementia Causes

What is Dementia?

Dementia Prevention

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Dementia Treatment

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Childhood Dementia Signs and Symptoms

Dementia with Lewy Bodies

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Latest Dementia News and Research

Routine blood test may offer clues to future dementia risk

A common blood test already carried out during routine health checks may contain clues about a person's long-term risk of dementia, according to research being presented at the ECNP Congress in Munich and recently published in the Journal of Alzheimer's Disease.

9 Oct 2026

Friends of BrainHealth grants advance dementia prevention and brain health research

For nearly 20 years, the Friends of BrainHealth donor circle has helped turn promising ideas into innovative brain health research.

9 Oct 2026

Sutter Health care model safely expands local Alzheimer's treatment

A multidisciplinary care model developed across Sutter Health helped general neurologists address a practical challenge facing health systems nationwide: how to safely offer newer Alzheimer's disease treatments in community settings to more patients.

9 Oct 2026

Early-onset Alzheimer's patients accumulate symptoms years before diagnosis

People who develop Alzheimer's disease before the age of 65 experience a growing range of health problems and increasing use of healthcare services years before diagnosis.

9 Oct 2026

Study uncovers a protective role for microglia in Parkinson's disease

Researchers at the University of Oxford have uncovered a previously unrecognized protective role for microglia, the brain's resident immune cells, in Parkinson's disease.

7 Oct 2026

Adults with ADHD face higher risk of developing dementia later in life

A new study led by University of Pittsburgh School of Medicine researchers finds that adults with attention-deficit/hyperactivity disorder (ADHD) face a significantly higher risk of developing dementia or mild cognitive impairment later in life.

7 Oct 2026

Dementia status influences end-of-life care decisions despite advance directives

People were about 19 percentage points less likely to recommend life-sustaining treatment for a seriously ill patient with dementia than for a patient without dementia, even when an advance directive requested life-sustaining care, according to new research from the University of Colorado Anschutz.

7 Oct 2026

New modeling reveals high societal value of early Alzheimer's care

New treatments that can slow the progression of Alzheimer's disease could provide significant lifetime benefits to patients and society, with even greater benefits when initiated earlier, according to new research from the USC Schaeffer Center for Health Policy & Economics.

7 Oct 2026

Study finds β-synuclein as early blood-based biomarker of Alzheimer's in Down syndrome patients

Decades before the first symptoms of Alzheimer's disease appear, some changes associated with the disease may begin to leave a trace in the blood.

7 Oct 2026

Could speech offer a window into aging?

Research on speech clocks shows promise for aging biomarkers, connecting speech age gaps to dementia phenotypes and social factors in a large cohort study.

7 Oct 2026

Overweight dementia patients likely to live longer than normal weight peers

People who are overweight or obese when they are diagnosed with dementia are likely to live longer than those in a normal weight range, according to a new study by Columbia University Mailman School of Public Health and NYU School of Global Public Health.

6 Oct 2026

Managing misfolded proteins to prevent Parkinson’s disease

The protein alpha-synuclein is abundant in healthy brains and plays an important role in enabling communication between nerve cells. However, under certain conditions, misfolded alpha-synuclein proteins can accumulate into toxic clumps inside neurons

6 Oct 2026

£80 m challenge for faster, better dementia diagnosis launched

The Dementia Challenge is accelerating the adoption of innovative technologies and practices that will diagnose and predict how the disease will progress.

6 Oct 2026

Social media and AI chatbots face gaps in supporting vulnerable users

Two new studies highlight how communication gaps can complicate efforts to protect vulnerable users of technologies such as social media and AI chatbots. Researchers will present the work at the 29th ACM Conference on Computer-Supported Cooperative Work and Social Computing (CSCW 2026), held October 1–14 in Salt Lake City.

6 Oct 2026

Gut bacterial metabolite worsens brain damage after stroke, study finds

Researchers at LMU have discovered how a metabolite produced by gut bacteria can influence brain damage after stroke.

1 Oct 2026

Cognitive tests may not tell the whole story about memory concerns

This study highlights the link between blood biomarkers and dementia risk in subjective cognitive decline, emphasizing prevention and lifestyle changes.

1 Oct 2026

Study examines driving cessation in dementia and MCI

Flinders University researchers have investigated the reactions of people with dementia and mild cognitive impairment (MCI), in the hope of finding a process that best supports the person with dementia.

1 Oct 2026

Novel 'speech clock' can estimate a person's chronological age

A large study shows that machine-learning clocks based on speech can estimate chronological age and may also offer a window into brain aging, biological aging, cognitive health, cumulative burden, and dementia.

30 Sep 2026

Swedish study links lower midlife cognitive scores to future strokes

Adults in their 60s who scored lower on tests of overall thinking ability, memory and how quickly they processed information were more likely to have a stroke years later, according to new research conducted in Sweden, published today in the Journal of the American Heart Association, an open-access, peer-reviewed journal of the American Heart Association.

30 Sep 2026

What older adults do on screens may matter more than total screen time

Across 8,996 older adults in four cohorts, television viewing was associated with poorer global cognition, while computer use was associated with better cognitive performance, with the strongest positive associations at low-to-moderate levels of use. Mendelian randomization supported these opposing patterns and linked genetically predicted television viewing time to lower left insula volume, which accounted for an estimated 14.8% of its association with poorer cognitive performance.

29 Sep 2026