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Public Health.

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Summary
This summary is machine-generated.

Large social networks may protect memory in older adults and enhance executive function in midlife individuals. This study explored social network size and cognitive resilience across different life stages.

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Area of Science:

  • Neuroscience
  • Gerontology
  • Social Epidemiology

Background:

  • Social stimulation from large networks may promote cognitive resilience.
  • Limited research has explored life-course differences in this relationship.
  • This study investigated social network size and resilience to neurodegeneration.

Purpose of the Study:

  • To examine the relationship between social network size and cognitive resilience.
  • To assess if this relationship differs between midlife and late-life adults.
  • To understand the impact of social networks on memory, language, and executive function.

Main Methods:

  • 1,602 Framingham Heart Study participants completed the Social Network Index (SNI).
  • Cognitive resilience was assessed using neuropsychological scores and plasma total tau (t-tau).
  • Linear regression analyzed associations, stratified by midlife and late-life groups.

Main Results:

  • Large social networks were linked to greater memory resilience in older adults.
  • Large social networks were associated with executive function resilience in midlife.
  • No significant associations were found for language resilience across groups.

Conclusions:

  • Large social networks appear protective against memory decline in elderly individuals.
  • Social networks may support executive function in midlife.
  • Further research in diverse populations is recommended.