topicGreen Tea Sleep Quality Randomized Trial
claimBlood glucose level, glycated hemoglobin level, body weight, and fat mass decreased with green tea intervention, while muscle mass increased across all groups (all p Trial Registration: University Hospital Medical Information Network (UMIN): UMIN000058708.
evidence level2
citationFuke S (2026)
sourceEffects of Green Tea-Intake Timing on Glucose and Lipid Metabolism in Older Adults: An 8-Week Randomized Controlled Trial.
topicGreen Tea Sleep Quality Randomized Trial
claimCatechins in green tea have been reported to enhance glucose tolerance and lipid metabolism.
evidence level2
citationFuke S (2026)
sourceEffects of Green Tea-Intake Timing on Glucose and Lipid Metabolism in Older Adults: An 8-Week Randomized Controlled Trial.
topicGreen Tea Sleep Quality Randomized Trial
claimHowever, the influence of chronic intake timing on these outcomes in older adults has not been fully elucidated.
evidence level2
citationFuke S (2026)
sourceEffects of Green Tea-Intake Timing on Glucose and Lipid Metabolism in Older Adults: An 8-Week Randomized Controlled Trial.
topicGreen Tea Sleep Quality Randomized Trial
claimRecent randomized trials and longitudinal studies report modest but reproducible benefits on cognitive domains and vascular/endothelial function with berry/grape extracts, matcha/green tea, and high-polyphenol extra-virgin olive oil; effects appear stronger in older adults or those with metabolic risk.
evidence level4
citationAkif A (2026)
sourceDietary Polyphenols in Non-Communicable Chronic Diseases: Neuro-Enteric Mechanisms, Multi-Omics Biomarkers and Translational Opportunities.
topicGreen Tea Sleep Quality Randomized Trial
claimComplementary evidence in irritable bowel syndrome (IBS)-a prototypical gut-brain disorder-suggests polyphenol-based combinations (often with probiotics/fiber) can improve quality of life and inflammatory markers, supporting enteric-central crosstalk.
evidence level4
citationAkif A (2026)
sourceDietary Polyphenols in Non-Communicable Chronic Diseases: Neuro-Enteric Mechanisms, Multi-Omics Biomarkers and Translational Opportunities.
topicGreen Tea Sleep Quality Randomized Trial
claimPolyphenols from plant foods (tea, cocoa, berries, grapes, and extra-virgin olive oil) modulate oxidative stress, inflammation, vascular function, and the gut microbiome-axes central to non-communicable chronic diseases (NCCDs) that involve the brain and enteric nervous system (ENS).
evidence level4
citationAkif A (2026)
sourceDietary Polyphenols in Non-Communicable Chronic Diseases: Neuro-Enteric Mechanisms, Multi-Omics Biomarkers and Translational Opportunities.