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Effects of Internet-Based Dementia Risk Reduction Education on Risk and Protective Factor Knowledge, Intentions, and

Anthony J Levinson^1,2, Stephanie Ayers¹, Sandra Clark¹

¹Faculty of Health Sciences, McMaster University, 1280 Main Street West, Hamilton, ON, L8S4L8, Canada, 1 9055259140 ext 26094.

Journal of Medical Internet Research

|March 10, 2026

Summary

This summary is machine-generated.

This study shows that an online dementia risk reduction program significantly improved knowledge and physical activity, especially for those with less education. It highlights the potential of e-learning for public health dementia prevention.

Keywords:

Alzheimer disease clinical trial dementia prevention dementia risk digital health interventions eHealth education and training internet public health web-based intervention

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Area of Science:

Public Health
Gerontology
Health Education

Background:

Dementia prevention is a growing public health concern.
Public awareness of dementia risk factors is low.
Web-based education can increase awareness and promote behavior change.

Purpose of the Study:

To evaluate an internet-based multimedia educational intervention (DementiaRisk.ca) for dementia prevention.
To assess the intervention's impact on knowledge, intentions, and health behaviors related to dementia risk reduction.

Main Methods:

A randomized controlled trial with 510 participants.
Intervention group received e-learning on dementia risk and brain health.
Control group received information on mild cognitive impairment.

Main Results:

The intervention group showed significantly greater improvements in dementia knowledge compared to the control group.
Physical activity increased significantly in the intervention group.
Improvements were most pronounced in participants with lower educational attainment.

Conclusions:

Internet-based e-learning effectively enhances dementia risk knowledge and promotes physical activity.
This approach is a scalable public health strategy for dementia risk reduction literacy.
Further research may explore effects on other health behaviors.