Structured evidence table for Green Tea Cognitive Function Randomized Trial, generated from 2 reusable source documents in the Migaku knowledge base.
| topic | claim | evidence level | citation | source |
|---|---|---|---|---|
| Green Tea Cognitive Function Randomized Trial | Camellia sinensis 1 2 3 4 5 L-theanine is a naturally occurring, water-soluble, non-proteinogenic amino acid that can be found in the tea plantand some mushrooms (). | 3 | Cotter Jack (2026) | Effects of L-theanine on cognition, mood and sleep: evidence from human trials |
| Green Tea Cognitive Function Randomized Trial | In addition, we examine evidence relating to its safety, consider the limitations of the current literature and highlight key areas for future research. | 3 | Cotter Jack (2026) | Effects of L-theanine on cognition, mood and sleep: evidence from human trials |
| Green Tea Cognitive Function Randomized Trial | 13 14 13 14 Table 1 13 15 16 17 18 19 There is growing interest among consumers for products that can help to support aspects of cognitive performance, such as attention, decision-making and memory, as well as associated subjective measures like perceived alertness and mental fatigue. | 3 | Cotter Jack (2026) | Effects of L-theanine on cognition, mood and sleep: evidence from human trials |
| Green Tea Cognitive Function Randomized Trial | It constitutes up to 50% of the total amino acids in tea and accounts for approximately 1–2% of its dry weight, contributing to tea's characteristic umami flavor (,). | 3 | Cotter Jack (2026) | Effects of L-theanine on cognition, mood and sleep: evidence from human trials |
| Green Tea Cognitive Function Randomized Trial | 2 [] 3 [] The biological plausibility of the neuroprotective effects of tea drinking is supported by various bioactive properties of compounds in tea leaves.Long-term tea consumption is also associated with more efficient global brain network connectivity.This is the first publication that reviews the intersection of tea and cognitive health in aging. | 4 | Zhang Kaifan (2026) | Tea and cognitive health in aging: Current evidence and future directions |
| Green Tea Cognitive Function Randomized Trial | 4 6 [–] 7 8 [,] 9 [] 4 [] 10 [] 11 [] 12 [] 13 [] 1 To date, evidence has emerged from populations with established tea-drinking habits such as Singapore,Japanand Chinawhere green tea and oolong tea are the main types of tea consumed. | 4 | Zhang Kaifan (2026) | Tea and cognitive health in aging: Current evidence and future directions |
| Green Tea Cognitive Function Randomized Trial | Analyses have shown that the consumption of both black and green tea is associated with improved cognitive function among older adults in China.In contrast, analyses of data from the U.S. | 4 | Zhang Kaifan (2026) | Tea and cognitive health in aging: Current evidence and future directions |
| Green Tea Cognitive Function Randomized Trial | Cognitive function declines with increasing age, and the prevalence and incidence of dementia and cognitive decline rise sharply with age. | 4 | Zhang Kaifan (2026) | Tea and cognitive health in aging: Current evidence and future directions |
Source documents