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Habitual tea drinking modulates brain efficiency: evidence from brain connectivity evaluation.

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Regular tea consumption enhances brain structural organization in older adults, improving efficiency. While not significantly impacting global function, it shows protective effects against age-related brain changes.

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Area of Science:

  • Neuroscience
  • Gerontology
  • Nutritional Neuroscience

Background:

  • Most tea research uses neuropsychological tests, with limited neuroimaging, especially for brain networks.
  • No prior studies have examined tea's impact on system-level brain networks.

Purpose of the Study:

  • To investigate the effects of tea drinking on brain organization in healthy older adults.
  • To compare functional and structural brain networks between tea drinkers and non-tea drinkers.

Main Methods:

  • Recruited healthy older participants into tea-drinking frequency groups.
  • Analyzed both functional and structural brain connectivity networks.

Main Results:

  • Tea drinking led to more efficient structural brain organization.
  • No significant global functional organization benefits were observed.
  • Tea consumption suppressed hemispheric asymmetry in structural connectivity but not functional connectivity.
  • Increased functional connectivity within the default mode network (DMN) was noted in tea drinkers.

Conclusions:

  • Tea drinking positively contributes to brain structure, offering potential protection against age-related decline.
  • The findings highlight tea's role in maintaining brain organization, particularly structural aspects.