ReviewFrontiers in nutrition2022
L-Theanine: A Unique Functional Amino Acid in Tea (
Review in Frontiers in nutrition, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 49 papers, 1 of them a synthesis that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
49 citing papers in PubMed, 1 synthesis or guideline pooled it, 129 citations in OpenAlex.
- The effects of L-theanine supplementation on the outcomes of patients with mental disorders: a systematic review.BMC psychiatry · 2024Pooled it
- Article
- Molecular evolution and functional divergence of CsAlaDC from CsSDC reveal key determinants for theanine biosynthesis in tea plants.Horticulture research · 2026Article
- L-theanine from Camellia sinensis (L.) attenuates 3-NP-induced Huntington's disease-like alterations by remedying behavioral patterns and modulating neurotransmitters across three distinct brain regions: evidence from in-vivo and in-silico approaches.Metabolic brain disease · 2026Article
- Compositional Diversity and Functional Interactions of Bioactive Compounds in Japanese Green Tea: Focus on Matcha, Sencha, and Gyokuro.Molecules (Basel, Switzerland) · 2026Review
- Sunrouge, an Anthocyanin-Rich Green Tea Cultivar, Attenuates Fat Accumulation and Obesity-Related Metabolic Abnormalities in Western Diet-Fed Mice.Food science & nutrition · 2026Article
- Protective effects of L-theanine against bisphenol A-induced oxidative stress and gut microbiota disruption in Wistar rats.Molecular biology reports · 2026Article
- From chemical characterization to functional validation: Screening of anti-hyperglycemic components and their action mechanisms in differentially fermented teas.Food chemistry: X · 2026Article
- Benefits of a Natural Dietary Supplement for Tinnitus: An Observational Prospective Exploratory Study.Audiology research · 2026Article
- Clinical assessment of blood glucose responses to 300-mg dose of L-theanine, an amino acid unique to green tea, in a fixed-sequence, two-period trial.Journal of pharmaceutical health care and sciences · 2026Article
- Prediction of Quality Substance Content of Hakka Stir-Fried Green Tea Based on Multiple Features of Near-Infrared Spectroscopy.Foods (Basel, Switzerland) · 2026Article
- Effects of L-theanine on cognition, mood and sleep: evidence from human trials.Frontiers in nutrition · 2026Review
- Effect ofIBRO neuroscience reports · 2025Article
- The Emerging Role of Citrulline and Theanine in Health and Disease: A Comprehensive Review.Nutrients · 2025Review
- Purification and biochemical characterization of L-glutaminase from Aspergillus oryzae with potential biotechnological applications in synthesis of L-theanine and as antitumor agent.Scientific reports · 2025Article
- L-Theanine Suppresses the Increase in Blood Glucose Levels in Mice During Glucose Tolerance Tests by Promoting Glucose Excretion in the Urine.Food science & nutrition · 2025Article
- Urinary metabolites associated with the long-term risk for chronic kidney disease incidence and progression in hypertensive patients.Metabolomics : Official journal of the Metabolomic Society · 2025Article
- Article
- Metabolic engineering of theanine biosynthesis in rice endosperm to develop biofortified theaRice for benefiting human health.Plant communications · 2025Article
- Multifunctional Roles of Medicinal Plants in the Meat Industry: Antioxidant, Antimicrobial, and Color Preservation Perspectives.Plants (Basel, Switzerland) · 2025Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
9 authors at 7 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Tea (
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.