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Uneven cerebellum aging may partly explain why some older adults stay mentally sharp

Research published in Nature Neuroscience indicates that different parts of the cerebellum age at varying rates. Greater cerebellar volume is associated with higher cognitive scores as people age. This suggests the cerebellum provides a brain reserve that helps maintain mental function.

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New data from brain imaging studies explains how heterogeneous cerebellar aging affects cognitive abilities.

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  1. Uneven Cerebellum Aging Linked to Cognitive Resilience

    Research published in Nature Neuroscience indicates that different parts of the cerebellum age at varying rates. Greater cerebellar volume is associated with higher cognitive scores as people age. This suggests the cerebellum provides a brain reserve that helps maintain mental function.

    What's confirmed:

    • The cerebellum is located at the base of the skull and contains most of the brain's neurons.
    • Different parts of the cerebellum change at different rates with age.
    • Greater cerebellar volume is associated with higher cognitive scores as age increases.
    • Spatially heterogeneous aging occurs where specific motor-related and association regions show steeper relationships with age than other lobules.
    • In Alzheimer's patients with lower amyloid burden, cerebellar volume was linked to cognition, particularly in those with two copies of the APOE-ε4 risk gene.

    Still unconfirmed:

    • A diet rich in anti-inflammatory foods might help people avoid dementia.
    confidence 95%