Kognition

L-TheaninStudienlage & Dosis

Alpha-Wellen, Entspannung ohne Sedierung, Koffein-Synergie.

Studien zuletzt aktualisiert 19. Mai 2026

Studienlage in Zahlen

Studien gesamt: 342
Mit Abstract: 50
Meta / Systematic / RCT: 64
Häufig zitiert: 50
Erscheinungsjahre: 1995–2026

L-Theanin im Kontext von Kognition

Dieses Thema ist Teil unserer Welt „Kognition". Dort findest du Methodik, Studienlage und Hebel mit dem größten Effekt — sowie die Reihenfolge, in der sich Hebel sinnvoll aufeinander aufbauen.

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Top-Studien zu L-Theanin

Sortiert nach einflussreichen Zitationen und Erscheinungsjahr.

The Tea Tree Genome Provides Insights into Tea Flavor and Independent Evolution of Caffeine Biosynthesis.
Mol Plant2017Study176 einflussreiche Zitationen
Tea is the world's oldest and most popular caffeine-containing beverage with immense economic, medicinal, and cultural importance. Here, we present the first high-quality nucleotide sequence of the repeat-rich (80.9%), 3.02-Gb genome of…
Understanding different regulatory mechanisms of proteinaceous and non-proteinaceous amino acid formation in tea (Camellia sinensis) provides new insights into the safe and effective alteration of tea flavor and function.
Crit Rev Food Sci Nutr2020Review149 einflussreiche Zitationen
Amino acids are the main contributors to tea (<i>Camellia sinensis</i>) flavor and function. Tea leaves contain not only proteinaceous amino acids but also specialized non-proteinaceous amino acids such as L-theanine and γ-aminobutyric…
L-theanine, unique amino acid of tea, and its metabolism, health effects, and safety.
Crit Rev Food Sci Nutr2017Review68 einflussreiche Zitationen
Tea has been a very popular beverage around the world for centuries. The reason that it is delicious, enabling hydration, showing warming and relaxing effect can be mentioned why it is consumed so much in addition to its prominent health…
Green tea effects on cognition, mood and human brain function: A systematic review.
Phytomedicine2017n=21systematic66 einflussreiche Zitationen
BACKGROUND: Green tea (Camellia sinensis) is a beverage consumed for thousands of years. Numerous claims about the benefits of its consumption were stated and investigated. As green tea is experiencing a surge in popularity in Western…
L-Theanine reduces psychological and physiological stress responses.
Biol Psychol2007n=12rct63 einflussreiche Zitationen
L-Theanine is an amino acid contained in green tea leaves which is known to block the binding of L-glutamic acid to glutamate receptors in the brain. Because the characteristics of L-Theanine suggest that it may influence psychological and…
The effects of L-theanine, caffeine and their combination on cognition and mood.
Biol Psychol2008RCT63 einflussreiche Zitationen
L-Theanine is an amino acid found naturally in tea. Despite the common consumption of L-theanine, predominantly in combination with caffeine in the form of tea, only one study to date has examined the cognitive effects of this substance…
Effects of L-Theanine Administration on Stress-Related Symptoms and Cognitive Functions in Healthy Adults: A Randomized Controlled Trial.
Nutrients2019n=30RCT61 einflussreiche Zitationen
This randomized, placebo-controlled, crossover, and double-blind trial aimed to examine the possible effects of four weeks L-theanine administration on stress-related symptoms and cognitive functions in healthy adults. Participants were 30…
Transcriptomic Analysis Reveals the Molecular Mechanisms of Drought-Stress-Induced Decreases in Camellia sinensis Leaf Quality.
Front Plant Sci2016Study53 einflussreiche Zitationen
The tea plant [Camellia sinensis (L.) O. Kuntze] is an important commercial crop rich in bioactive ingredients, especially catechins, caffeine, theanine and other free amino acids, which the quality of tea leaves depends on. Drought is the…
The Effects of Green Tea Amino Acid L-Theanine Consumption on the Ability to Manage Stress and Anxiety Levels: a Systematic Review.
Plant Foods Hum Nutr2020n=9systematic51 einflussreiche Zitationen
The green tea amino acid, L-theanine (L-THE) is associated with several health benefits, including improvements in mood, cognition and a reduction of stress and anxiety-like symptoms. This systematic review evaluated the effect of pure…
Acute effects of tea constituents L-theanine, caffeine, and epigallocatechin gallate on cognitive function and mood: a systematic review and meta-analysis.
Nutr Rev2014n=11meta46 einflussreiche Zitationen
A systematic review and meta-analysis was conducted on 11 randomized placebo-controlled human studies of acute effects of tea constituents L-theanine and epigallocatechin gallate, administered alone or in combination with caffeine, on…

Häufige Fragen

Für welche Population gilt die Evidenz?

Die meisten Studien untersuchten: unknown.

Gibt es Sicherheitshinweise zu L-Theanin?

• Not reported in abstract • L-theanine increased headache ratings. • The combination reduced headache ratings relative to some conditions. • Not reported