Tuesday, February 24, 2026

When Age Is More Than a Number: Acceleration of Brain Aging in Neurodegenerative Diseases.

Authors: Doering E, Hoenig MC, Cole JH, Drzezga A.

DOI: 10.2967/jnumed.125.270325

Abstract Summary

Brain age gap (BAG)โ€”the difference between measured brain age via neuroimaging and chronological ageโ€”offers promising biomarkers for neurodegenerative diseases. While such diseases aren’t simply accelerated aging, they produce similar brain changes detectable by machine learning models across multiple imaging modalities: structural MRI, metabolic PET, functional MRI, and diffusion MRI. Each provides unique insights into disease progression, particularly in Alzheimer’s disease.

Why Brain? ๐Ÿง 

Brain age gap (BAG) from neuroimaging reveals accelerated aging in neurodegeneration, offering biomarkers for Alzheimer’s monitoring and evaluating therapeutic interventions across MRI modalities.

Study Limitations:

Single-center study design not explicitly mentioned.
Small sample size not explicitly mentioned.

License: cc by.


The image is AI-generated for illustrative purposes only. Courtesy of Midjourney.

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