MatchaDB

Research

The Global Matcha Research Library

641 papers, trials, theses and preprints that study matcha, gathered from PubMed, OpenAlex and Europe PMC, tagged by study type and topic, and linked back to every source. We keep abstracts and citations; the full text stays with its publisher.

Tip: use "quotes" for an exact phrase, OR between alternatives, and a minus to leave a word out, for example fluoride OR pesticide. Related words are matched too, so “EGCG” also finds “epigallocatechin.”

Popular searchesL-theanineEGCG and catechinsCaffeineFocus and memoryStress and sleepWeight and metabolismGut healthContaminantsPesticidesShade-growingAroma and flavorTea ceremony

9 studies match for “randomized placebo-controlled trial”

2024Journal articleFree to read

Matcha Does Not Affect Electroencephalography during Sleep but May Enhance Mental Well-Being: A Randomized Placebo-Controlled Clinical Trial.

Baba Y, Takihara T, Okamura N — Nutrients

… behind the observed improvements in subjective sleep quality in matcha. A placebo-controlled randomized double-blind parallel-group study was conducted on healthy Japanese men and women aged 27-64 years. After 4 weeks of consuming …

Randomized controlled trialCognition, mood and stressAntioxidants and polyphenolsL-theanine and caffeineCited 8×
2021Journal articleFree to read

Effects of Daily Matcha and Caffeine Intake on Mild Acute Psychological Stress-Related Cognitive Function in Middle-Aged and Older Adults: A Randomized Placebo-Controlled Study.

Baba Y, Inagaki S, Nakagawa S, et al. — Nutrients

Matcha, a type of green tea, has a higher amino acid content than other types of tea. We previously examined the ability of matcha to improve cognitive function in older adults and determined that continuous matcha intake improves…

Randomized controlled trialCognition, mood and stressL-theanine and caffeineCited 32×
2021Journal articleFree to read

Matcha consumption maintains attentional function following a mild acute psychological stress without affecting a feeling of fatigue: A randomized placebo-controlled study in young adults.

Baba Y, Kaneko T, Takihara T — Nutrition research (New York, N.Y.)

Tea is a beverage commonly consumed worldwide. Matcha is a type of green tea produced by drying and grinding tea leaves (Camellia sinensis L.) into a fine powder. Matcha contains catechin, theanine, and caffeine, which affect cognitive…

Randomized controlled trialCognition, mood and stressAntioxidants and polyphenolsL-theanine and caffeineCited 29×
2024Journal articleFree to read

Effect of matcha green tea on cognitive functions and sleep quality in older adults with cognitive decline: A randomized controlled study over 12 months.

Uchida K, Meno K, Korenaga T, et al. — PloS one

… has beneficial effects on cognitive function and mood. We conducted a randomized, double-blind, placebo-controlled clinical study over 12 months to examine the effect of matcha on cognitive function and sleep quality. Methods: …

Randomized controlled trialCognition, mood and stressAntioxidants and polyphenolsL-theanine and caffeineCited 25×
2020Journal articleFree to read

Effects of Matcha Green Tea Powder on Cognitive Functions of Community-Dwelling Elderly Individuals.

Sakurai K, Shen C, Ezaki Y, et al. — Nutrients

… and the change in cognitive functions of community-dwelling elderly people. A randomized, double-blind, placebo-controlled 12-week trial was performed. Sixty-one participants were recruited and randomly assigned to receive test drink …

Randomized controlled trialCognition, mood and stressAntioxidants and polyphenolsProcessing, milling and qualityCited 46×
2024Journal articleFree to read

Effects of three-week intake of Matcha green tea powder on heart rate variability metrics

Mark E. T. Willems, Cameron Thomas Foster — Dietary Supplements and Nutraceuticals

… yrs, body mass: 68±11 kg, height: 162±5 cm) volunteered. The study employed a placebo-controlled, randomised cross-over design. Time-domain heart rate variability metrics during supine rest (n=5) and physiological and metabolic responses …

Randomized controlled trialMetabolism and weightCardiovascular and blood pressureAntioxidants and polyphenolsCited 2×
2017Journal articleFree to read

An intervention study on the effect of matcha tea, in drink and snack bar formats, on mood and cognitive performance.

Dietz C, Dekker M, Piqueras-Fiszman B — Food research international (Ottawa, Ont.)

… study administering matcha tea and a matcha containing product. Using a randomized, placebo-controlled, single-blind study, 23 consumers participated in four test sessions. In each session, participants consumed one of the four …

Randomized controlled trialCognition, mood and stressAntioxidants and polyphenolsL-theanine and caffeineCited 66×
2021Journal articleFree to read

Three Weeks Daily Intake of Matcha Green Tea Powder Affects Substrate Oxidation during Moderate-Intensity Exercise in Females.

Willems MET, Fry HL, Belding MA, et al. — Journal of dietary supplements

… equivalent) for the subsequent 30-min treadmill walk. The study had a randomized placebo-controlled cross-over design with participants tested between day 9 and 11 of the menstrual cycle (follicular phase). Participants consumed …

Randomized controlled trialMetabolism and weightProcessing, milling and qualityCardiovascular and blood pressureCited 10×

How this library is built

Every record comes from three open scholarly indexes — PubMed, OpenAlex and Europe PMC — searched for the word “matcha.” Records are merged by DOI and PubMed ID so each study appears once. A paper is kept only if matcha appears in its title, abstract, author keywords or subject terms and the text is about tea or food, which filters out the surname Matcha, software called Matcha, and the Scandinavian verb “matcha” (to match).

Study type and topic tags are assigned automatically from each paper's own title, abstract and subject terms using fixed keyword rules — no guesses, and papers without an abstract are marked as unclassified. Automatic tagging is imperfect, so treat tags as a way to narrow a search, not as a verdict on a paper's quality. A study being listed here is not an endorsement of its findings.

Coverage: this is every indexed paper that names matcha, not every study of green tea or its compounds (those are far more numerous). Papers that mention matcha only in passing are hidden by default. Work that never uses the word “matcha,” and publications outside these indexes, are not included. The library was last rebuilt October 20, 2026.

Spot a paper that doesn't belong, or one that's missing? Tell us.