Contents
Understanding Dementia: What Are the Risk Factors?
Published: Nov 20, 2023
Dementia is a growing concern as our global population ages. This article explores the various risk factors that contribute to its onset.
Age: The Leading Factor
Age is the most significant risk factor for dementia, especially for Alzheimer’s disease. The risk doubles every decade after age 60, with the majority of cases occurring in individuals over 75. Dementia is present in half to two-thirds of nursing home residents, and its prevalence continues to rise in those over 90.
The Role of Genetics
Genetics play a crucial role in dementia, particularly in Alzheimer's disease. A family history can double the risk, especially if a parent was diagnosed before 80. Early-onset Alzheimer's, though rare, often follows a genetic pattern involving specific gene mutations.
Cardiometabolic Risk Factors
Conditions like diabetes, hypertension, and obesity significantly increase the risk of dementia. These factors are most impactful when they occur in midlife, emphasizing the importance of managing health early. A combination of these risks can drastically heighten the likelihood of developing dementia.
Lifestyle Influences
Low education, social isolation, and inactivity are lifestyle factors linked to dementia. Higher education may provide cognitive reserve, delaying symptoms. Engaging in mental, social, and physical activities can potentially reduce the risk.
Frequently Asked Questions
Age is the strongest risk factor, especially after 60 years.
Yes, family history significantly increases the risk.
Low education, inactivity, and isolation can increase risk.
Yes, managing health in midlife is crucial.
Key Takeaways
Understanding and mitigating these risk factors can help delay or prevent dementia.
References
- Livingston G, Huntley J, Liu KY, et al. Dementia prevention, intervention, and care: 2024 report of the Lancet standing Commission. Lancet 2024; 404:572.
- Jones A, Ali MU, Kenny M, et al. Potentially Modifiable Risk Factors for Dementia and Mild Cognitive Impairment: An Umbrella Review and Meta-Analysis. Dement Geriatr Cogn Disord 2024; 53:91.
This article has been reviewed for accuracy by one of the licensed medical doctors working for Doctronic. Always discuss health information with your healthcare provider.
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