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Regular yerba mate (YM) consumption may be linked to a lower risk of cognitive impairment (CI). This pilot study found YM drinkers performed better on memory and learning tests, suggesting a protective effect.

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Area of Science:

  • Neuroscience
  • Nutritional Science
  • Epidemiology

Background:

  • Yerba mate (YM), an Ilex paraguariensis infusion, is a popular South American beverage.
  • Experimental data suggest YM possesses antioxidant and neuroprotective properties.
  • Potential links between YM and cognitive health require further investigation.

Purpose of the Study:

  • To evaluate the association between yerba mate consumption and the risk of cognitive impairment (CI).
  • To explore the relationship between YM intake and cognitive performance in older adults.

Main Methods:

  • A case-control study was conducted with individuals aged ≥50 years.
  • Participants completed neurocognitive testing and surveys on lifestyle, including YM consumption.
  • Logistic regression analysis adjusted for age and gender was used to assess the association.

Main Results:

  • Regular YM consumers demonstrated better performance in logical memory and serial word learning.
  • A potential association was observed between regular YM consumption and a reduced risk of CI (OR 0.76).
  • No significant differences in age or education levels were found between control and patient groups.

Conclusions:

  • This pilot study indicates a possible association between yerba mate consumption and a lower risk of cognitive impairment.
  • Findings align with prior research suggesting neuroprotective benefits of YM.
  • Larger-scale studies are warranted to confirm these results and elucidate underlying mechanisms.