Quick Answer
Green Tea Catechins Cognitive Function Randomized Trial has evidence relevant to safety, limits, and clinician-discussion contexts, but conclusions should stay close to the cited sources. One representative finding is: However, 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).
Key Takeaways
- 01However, 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). [Baba Y (2024)]
- 02The continuous intake of matcha may offer improved subjective sleep quality and emotional stability despite not offering significant changes in objective sleep parameters. [Baba Y (2024)]
- 03Although theanine in matcha improves sleep quality and cognitive function, the caffeine in green tea is thought to worsen sleep quality. [Baba Y (2024)]
- 04Therefore, this study investigated the factors behind the observed improvements in subjective sleep quality in matcha. [Baba Y (2024)]
The current Migaku evidence database contains 2 reusable source documents for Green Tea Catechins Cognitive Function Randomized Trial. This answer focuses on safety, limits, and clinician-discussion contexts.
- However, 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). [Baba Y (2024); evidence level 2]
- The continuous intake of matcha may offer improved subjective sleep quality and emotional stability despite not offering significant changes in objective sleep parameters. [Baba Y (2024); evidence level 2]
- Although theanine in matcha improves sleep quality and cognitive function, the caffeine in green tea is thought to worsen sleep quality. [Baba Y (2024); evidence level 2]
- Therefore, this study investigated the factors behind the observed improvements in subjective sleep quality in matcha. [Baba Y (2024); evidence level 2]
- DM‐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. ). [Zhang Ruyi (2025); evidence level 3]
Evidence levels are sorting aids, not final clinical grades. Level 1 usually indicates systematic-review style evidence, level 2 indicates randomized trials or public-health guidance, and lower levels need more cautious wording.
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Sources