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Summary
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Sarcopenia, a loss of muscle mass, is linked to poorer cognitive function and reduced brain volumes, particularly in areas for attention and language. Early intervention may prevent cognitive decline.

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Area of Science:

  • Gerontology
  • Neuroscience
  • Public Health

Background:

  • Sarcopenia is increasingly recognized as a risk factor for cognitive impairment.
  • Limited research exists on the structural brain changes associated with sarcopenia.
  • This study investigates cognitive and neuroimaging correlates of sarcopenia in an Indian urban cohort.

Purpose of the Study:

  • To explore cognitive function and structural brain changes in individuals with sarcopenia.
  • To identify neuroimaging correlates of cognitive impairment in sarcopenic individuals.
  • To examine the relationship between sarcopenia, cognition, and brain volumes in an aging population.

Main Methods:

  • 1119 cognitively healthy participants were screened for sarcopenia using calf circumference and handgrip strength.
  • Participants were categorized into healthy and sarcopenia groups.
  • Cognitive function was assessed using ACE-III, and brain imaging was performed using 3T MRI.

Main Results:

  • The sarcopenia group exhibited poorer performance in global cognition, attention, and language domains.
  • Individuals with sarcopenia had significantly lower grey and white matter brain volumes.
  • Reduced volumes were observed in brain regions critical for attention and language functions in the sarcopenia group.

Conclusions:

  • Sarcopenia is associated with cognitive decline and reduced brain volumes.
  • Lifestyle modifications and early interventions for sarcopenia may help preserve brain health.
  • Preventing sarcopenia is crucial for mitigating age-related cognitive decline and brain volume loss.