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Related Concept Videos

Dementia01:30

Dementia

Dementia is a collective term for cognitive disorders primarily affecting memory, thinking, and reasoning. It is not a specific disease but a syndrome, with Alzheimer's disease being the most common cause, accounting for approximately 60-80% of cases. Other types include vascular dementia, Lewy body dementia, and frontotemporal dementia. Dementia affects millions worldwide, particularly older adults, though it is not a normal part of aging.
The progression of dementia is generally gradual.
Alzheimer's Disease: Treatment01:22

Alzheimer's Disease: Treatment

Alzheimer's Disease (AD), a neurodegenerative disorder, is pathologically identified by amyloid plaques and neurofibrillary tangles composed of tau protein. AD pharmacotherapy aims to manage cognitive symptoms, delay disease progression, and treat behavioral symptoms. The treatment is primarily symptomatic and palliative, with no definitive disease-modifying therapy available. Cholinesterase inhibitors, including donepezil (Aricept), rivastigmine (Exelon), and galantamine (Razadyne), are...
Dementia l: Introduction01:22

Dementia l: Introduction

Dementia is an acquired, progressive syndrome characterized by a decline in multiple cognitive domains severe enough to impair daily functioning and reduce independence. Although memory loss is a central feature, the diagnosis requires additional deficits involving language, executive function, visuospatial skills, judgment, calculation, or abstract reasoning. These cognitive impairments reflect underlying neurodegenerative or vascular processes that gradually disrupt neuronal networks...
Alzheimer's Disease: Overview01:26

Alzheimer's Disease: Overview

Alzheimer's Disease (AD) is a continually advancing neurodegenerative disorder, distinguished by escalating memory loss, cognitive dysfunction, and dementia. The disease unfolds in three stages: preclinical, mild cognitive impairment (MCI), and dementia. Its onset is insidious, and the progression gradual, with the cause not well explained by other disorders.
The clinical diagnosis of AD hinges on the presence of memory and other cognitive impairments. Biomarkers, such as changes in Aβ and tau...
Alzheimer Disease l: Introduction01:29

Alzheimer Disease l: Introduction

Alzheimer disease is a chronic, progressive, and irreversible neurodegenerative disorder and the most common cause of dementia in older adults. It leads to gradual neuronal loss, causing cognitive decline, behavioral changes, and loss of functional independence.Risk Factors and EtiologyThe disease is multifactorial. Age is the strongest risk factor, with prevalence doubling every 5 years after age 65. Genetic factors include mutations in genes such as APP, PSEN1, and PSEN2, which are associated...
Levels of Health Promotion and Illness Prevention01:26

Levels of Health Promotion and Illness Prevention

Health promotion allows a person to control the determinants of health, resulting in an improved health status. It enhances the quality of life and reduces premature deaths. Health promotion and illness prevention programs help people make beneficial choices to reduce the risk of disease and disabilities. There are three health promotion and illness prevention levels: primary, secondary, and tertiary prevention.
In primary prevention, actions taken before disease onset prevent the disease from...

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Related Experiment Video

Updated: Jul 2, 2026

A Machine Learning Approach to Design an Efficient Selective Screening of Mild Cognitive Impairment
12:18

A Machine Learning Approach to Design an Efficient Selective Screening of Mild Cognitive Impairment

Published on: January 11, 2020

Population-level interventions for dementia prevention: a systematic review.

Blossom C M Stephan1, Jennifer Dunne1, Jacob Brain2

  • 1Dementia Centre of Excellence, enAble Institute, Curtin University, Perth, WA, Australia.

The Lancet. Healthy Longevity
|June 30, 2026
PubMed
Summary

Nearly half of dementia cases are preventable. Population-level interventions show promise, with combined risk assessment and education improving modifiable risk factors. Future strategies need long-term engagement and co-design.

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Highlighting and Reducing the Impact of Negative Aging Stereotypes During Older Adults' Cognitive Testing
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Highlighting and Reducing the Impact of Negative Aging Stereotypes During Older Adults' Cognitive Testing

Published on: January 24, 2020

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Last Updated: Jul 2, 2026

A Machine Learning Approach to Design an Efficient Selective Screening of Mild Cognitive Impairment
12:18

A Machine Learning Approach to Design an Efficient Selective Screening of Mild Cognitive Impairment

Published on: January 11, 2020

Highlighting and Reducing the Impact of Negative Aging Stereotypes During Older Adults' Cognitive Testing
06:58

Highlighting and Reducing the Impact of Negative Aging Stereotypes During Older Adults' Cognitive Testing

Published on: January 24, 2020

Area of Science:

  • Public Health
  • Neurology
  • Behavioral Science

Background:

  • Dementia is a growing public health concern, with nearly half of cases potentially preventable.
  • Few evaluated population-level interventions exist for dementia risk reduction communication.

Purpose of the Study:

  • To systematically review population-level interventions for communicating dementia risk reduction and prevention messaging.
  • To evaluate the effectiveness of various communication strategies on knowledge and behavior change.

Main Methods:

  • Systematic review of 12 studies from eight countries.
  • Included interventions focused on communicating dementia-specific risk reduction and prevention.
  • Studies varied in sample size (51-8360) and intervention type.

Main Results:

  • Intervention effectiveness varied; mass media campaigns had broad reach but limited knowledge gains.
  • Educational and interactive interventions (e.g., personalized risk profiling, online courses) showed consistent improvements.
  • A combined risk assessment and structured education approach achieved a 26% improvement in modifiable risk factor status over 3 years.

Conclusions:

  • Population-level interventions can improve dementia risk factor knowledge and behaviors.
  • Combined risk assessment with structured education appears most effective.
  • Future strategies require long-term engagement, co-design, and scalable implementation for diverse populations.