Can brain age sharpen dementia risk?
Overview
A study of 799 patients found that a greater difference between estimated brain age and chronological age may be linked to dementia progression. Specifically, each additional year of brain-predicted age difference (brain-PAD) was associated with a higher likelihood of progression to dementia, particularly in patients with subjective cognitive decline.
Background
Understanding the relationship between brain age and dementia risk is crucial for early identification and intervention in at-risk populations. This study focuses on patients with subjective cognitive decline and mild cognitive impairment, conditions that often precede dementia.
Data Highlights
| Measure | Findings |
|---|---|
| Progression to dementia | 29% (n = 235) of patients progressed during a median follow-up of 3.2 years |
| Brain-PAD association | Each additional year of brain-PAD linked to 6% higher likelihood of progression |
| Subjective cognitive decline | Each additional year of brain-PAD linked to 9% higher hazard of progression |
| C-index improvement | Increased from 0.77 to 0.79 with brain-PAD in subjective cognitive decline |
Key Findings
- A greater brain-PAD is associated with increased dementia progression risk.
- 29% of the cohort progressed to dementia over a median follow-up of 3.2 years.
- Each additional year of brain-PAD increased the likelihood of progression by 6% overall.
- In patients with subjective cognitive decline, each additional year of brain-PAD was associated with a 9% higher hazard of progression.
- Brain-PAD improved model fit for predicting dementia risk when combined with other assessments.
Clinical Implications
The findings suggest that brain-PAD may serve as a valuable biomarker for assessing dementia risk in patients with cognitive decline. Clinicians may consider incorporating brain imaging assessments into routine evaluations to better stratify patients based on their risk of progression to dementia.
Conclusion
This study highlights the potential of brain age estimation as a predictive tool for dementia progression, particularly in patients with subjective cognitive decline. Further research is needed to validate these findings across diverse populations.
Related Resources & Content
- De Vries S., Neurology, 2024 -- Can brain age sharpen dementia risk?
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- Renal Impairment: New Dementia Clue Found
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- The Alzheimer's Association clinical practice guideline for the Diagnostic Evaluation, Testing, Counseling, and Disclosure of Suspected Alzheimer's Disease and Related Disorders (DETeCD‐ADRD)
- Alzheimer's Association Clinical Practice Guideline on the use of blood‐based biomarkers in the diagnostic workup of suspected Alzheimer's disease within specialized care settings
- Brain Age Gap as a Predictive Biomarker for Neurodegenerative Disease Progression: A Systematic Review and Meta-analysis (P7-12.011) | Neurology
Based on findings from:
Can brain age sharpen dementia risk?
Kathryn Wighton. MDSpire News, 2026.
https://news.mdspire.com/neurology/articles/can-brain-age-sharpen-dementia-risk/
This content is an AI-generated, fully rewritten summary based on a published scholarly article. It does not reproduce the original text and is not a substitute for the original publication. Readers are encouraged to consult the source for full context, data, and methodology.
