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.

Childhood Dementia Causes

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

Dementia with Lewy Bodies

Migraines and Dementia

Aromatherapy for Dementia

Does Depression and Anxiety Increase the Risk of Dementia?

Differences Between Alzheimer's and Dementia

Transcutaneous Electrical Nerve Stimulation for Dementia

Dementia Diagnosis

Dementia Treatment

Childhood Dementia Signs and Symptoms

See more featured articles »

What is Mixed Dementia?

Mixed Dementia Symptoms and Diagnosis

Dementia Prevention

Antidepressants and Dementia: Is There a Link?

What is Dementia?

Mixed Dementia Prevention and Treatment

Bright Light Therapy and Dementia

Coconut Oil and Dementia

Dementia Symptoms

Latest Dementia News and Research

Niigata University study updates Alzheimer's risk for APOE-e4 homozygotes

Researchers at Niigata University have conducted the first comprehensive reappraisal in nearly 30 years of the risk of Alzheimer's disease (AD) associated with APOE-e4 homozygosity (e4*4) in the Japanese population.

30 Jun 2026

Blood metabolism maps how lifestyle tracks function in cognitive aging

A new study used pathway-level blood metabolomics to identify lifestyle-associated metabolic patterns linked to physical, cognitive, and daily functional performance across CN, MCI, and AD. The findings suggest that diet- and activity-linked pathway signals span energy, amino acid, lipid, inflammatory, oxidative stress, and microbiome-related metabolism, but require independent and longitudinal validation.

29 Jun 2026

Extreme heat and cold threaten health of people with dementia

Exposure to extreme heat and cold is associated with an increased risk of emergency department (ED) visits among people living with dementia, according to preliminary research presented today at the European Academy of Neurology (EAN) Congress 2026.

29 Jun 2026

New viral model triggers Parkinson's symptoms without using toxins

Scientists usually use animal models when studying Parkinson's disease because these models mimic the disease well.

29 Jun 2026

ARU secures funding to continue NHS Clinical Entrepreneur Programme

Anglia Ruskin University (ARU) has secured £4.8 million to continue delivering the NHS Clinical Entrepreneur Programme, which is playing an important role in supporting innovation across the National Health Service.

29 Jun 2026

Scientists discover how Arc protein spreads Alzheimer's brain pathology

Alzheimer's disease is driven by a buildup of a toxic protein called Tau that kills neurons. As toxic Tau spreads to new regions of the brain, symptoms become worse and ultimately fatal.

29 Jun 2026

Brighter daytime light is linked to a lower dementia risk

The study finds that greater exposure to daytime light may lower dementia risk, pointing to light's role in enhancing circadian rhythms and cognitive function.

29 Jun 2026

Women with Parkinson's may be more vulnerable to Alzheimer's pathology

Women with Parkinson's disease may be more vulnerable to Alzheimer's-related changes in the brain than men, according to new research presented at the European Academy of Neurology (EAN) Congress 2026.

28 Jun 2026

Hearing aids may lower dementia risk in adults with epilepsy and hearing loss

Adults with both epilepsy and hearing loss who use hearing aids may have a 23% lower risk of developing dementia than those who do not, according to new research presented at the European Academy of Neurology (EAN) Congress 2026.

26 Jun 2026

Longer hormone exposure linked to healthier brain aging in women

Research indicates that hormonal therapies and later menopause are associated with increased brain volume and thickness, promoting healthier aging.

26 Jun 2026

Blood metabolites reveal lifestyle links to brain health before dementia

Blood metabolome profiling in dementia-free middle-aged adults linked 14 metabolites to cognition and 22 metabolites to MRI markers of brain health. Lifestyle, clinical factors, medication use and gut microbiota appeared to shape many of these metabolites, with ergothioneine emerging as a notable cognition-linked signal.

25 Jun 2026

Discovery of karyoptosis opens new therapeutic targets for Alzheimer's and frontotemporal dementia

Markers of a new mechanism for cell death, called karyoptosis, have been found in brains of patients with Alzheimer's disease and frontotemporal dementia (FTD).

25 Jun 2026

High-dose DHA reaches the brain but fails to protect memory

High-dose DHA effectively increased brain levels in older adults at Alzheimer's risk, but did not lead to cognitive or structural brain health improvements.

25 Jun 2026

Higher daytime light exposure linked to lower dementia risk

New research in General Psychiatry has uncovered a link between higher levels of daytime light exposure and a lower risk of dementia.

24 Jun 2026

Hidden costs push United States dementia toll to historic high

A new USC-led study finds Alzheimer's disease and related dementias will cost the United States an estimated $818 billion this year, driven largely by often-overlooked costs to persons living with dementia and family and friends providing their care.

24 Jun 2026

Zebrafish model unlocks new insights into hereditary brain disease

CADASIL, an inherited disease caused by mutations in the NOTCH3 gene, damages the brain’s small blood vessels, leading to strokes, cognitive decline, and early dementia.

24 Jun 2026

Lifetime estrogen exposure linked to improved brain health in women

Researchers from the University of Kansas have shown a link between reproductive hormone exposure throughout life and brain health in 459 women aged 65 to 80.

23 Jun 2026

Psychological traits may uncover why Alzheimer’s biology differs between patients

In 822 deceased older adults from ROS and MAP, researchers linked stable psychological traits to multi-omic molecular subtypes of Alzheimer’s dementia using postmortem brain tissue from the dorsolateral prefrontal cortex. Neuroticism and loneliness were associated with molecular progression, while purpose in life showed subtype-specific inverse associations, suggesting psychological traits may align with Alzheimer’s biology beyond conventional neuropathology.

22 Jun 2026

Study links genes and sleep habits to Alzheimer's risk

New research from Edith Cowan University (ECU) has discovered an important link between our genes and sleep habits, suggesting they work together to influence early brain and cognitive changes associated with Alzheimer's Disease, long before symptoms appear.

22 Jun 2026