topicGreen Tea Catechins Cognitive Function Randomized Trial
claimHowever, the sleep questionnaire Oguri-Shirakawa-Azumi Sleep Inventory, the Middle-age and Aged version (OSA-MA), administered immediately after waking showed a trend toward increased satisfaction with sleep time ( p p p < 0.1).
evidence level2
citationBaba Y (2024)
sourceMatcha Does Not Affect Electroencephalography during Sleep but May Enhance Mental Well-Being: A Randomized Placebo-Controlled Clinical Trial.
topicGreen Tea Catechins Cognitive Function Randomized Trial
claimThe continuous intake of matcha may offer improved subjective sleep quality and emotional stability despite not offering significant changes in objective sleep parameters.
evidence level2
citationBaba Y (2024)
sourceMatcha Does Not Affect Electroencephalography during Sleep but May Enhance Mental Well-Being: A Randomized Placebo-Controlled Clinical Trial.
topicGreen Tea Catechins Cognitive Function Randomized Trial
claimAlthough theanine in matcha improves sleep quality and cognitive function, the caffeine in green tea is thought to worsen sleep quality.
evidence level2
citationBaba Y (2024)
sourceMatcha Does Not Affect Electroencephalography during Sleep but May Enhance Mental Well-Being: A Randomized Placebo-Controlled Clinical Trial.
topicGreen Tea Catechins Cognitive Function Randomized Trial
claimTherefore, this study investigated the factors behind the observed improvements in subjective sleep quality in matcha.
evidence level2
citationBaba Y (2024)
sourceMatcha Does Not Affect Electroencephalography during Sleep but May Enhance Mental Well-Being: A Randomized Placebo-Controlled Clinical Trial.
topicGreen Tea Catechins Cognitive Function Randomized Trial
claimDM‐associated cognitive impairment represents a complex pathological condition, involving multiple mechanisms including oxidative stress, neuroinflammation, and disruption of the gut‐brain axis (Góralczyk‐Bińkowska et al. ; Xu et al. ; Borse et al. ; Loh et al. ; Pelle et al. ).
evidence level3
citationZhang Ruyi (2025)
sourceFermented Tea and Cognitive Dysfunction in Diabetes: A Novel Perspective on the Gut‐Brain AXIS
topicGreen Tea Catechins Cognitive Function Randomized Trial
claimEmerging evidence underscores the critical influence of gut microbiota on neurological outcomes, suggesting microbiota‐targeted interventions may mitigate diabetes‐related cognitive deficits.
evidence level3
citationZhang Ruyi (2025)
sourceFermented Tea and Cognitive Dysfunction in Diabetes: A Novel Perspective on the Gut‐Brain AXIS
topicGreen Tea Catechins Cognitive Function Randomized Trial
claimChibi Green Brick tea This review aims to critically examine the potential of fermented tea, specifically its bioactive tea polyphenols, in mitigating diabetes‐associated cognitive dysfunction by modulating the gut‐brain axis.
evidence level3
citationZhang Ruyi (2025)
sourceFermented Tea and Cognitive Dysfunction in Diabetes: A Novel Perspective on the Gut‐Brain AXIS
topicGreen Tea Catechins Cognitive Function Randomized Trial
claim2023 2018 2022 2022 2022 2021 2024 2023 2023 2021 Diabetes mellitus (DM) is a chronic metabolic disorder characterized by persistent hyperglycemia, posing a significant global health burden with escalating prevalence (Zhang et al. ; Biessels and Despa ).
evidence level3
citationZhang Ruyi (2025)
sourceFermented Tea and Cognitive Dysfunction in Diabetes: A Novel Perspective on the Gut‐Brain AXIS