Mental wellbeing / L-theanine
L-theanine
Evidence for mental wellbeing, scored from the published research.
stress
promising68/100 Evidence ScoreConfidence: moderate4 studies3 RCTs
Multiple human studies report a positive effect.
- 3 human studies (76 participants total)
- Studies point in broadly the same direction
- Still unknown: few longer-duration studies
References (4)
- L-Theanine reduces psychological and physiological stress responses.randomized controlled trial (RCT) · Biological psychology · 2007
- Effects of L-Theanine Administration on Stress-Related Symptoms and Cognitive Functions in Healthy Adults: A Randomized Controlled Trial.randomized controlled trial (RCT) · Nutrients · 2019
- Anti-Stress, Behavioural and Magnetoencephalography Effects of an L-Theanine-Based Nutrient Drink: A Randomised, Double-Blind, Placebo-Controlled, Crossover Trial.randomized controlled trial (RCT) · Nutrients · 2016
- L-theanine alleviates myocardial ischemia/reperfusion injury by suppressing oxidative stress and apoptosis through activation of the JAK2/STAT3 pathway in mice.animal study · Molecular medicine (Cambridge, Mass.) · 2024
Evidence Scores are computed mechanically from the published research (PubMed / Semantic Scholar / OpenAlex): study design, participant numbers, and consistency across studies. An LLM is used only to extract study data, never to decide a score.
This is research-based information, not medical advice, and not a diagnosis. Consult a qualified professional about your own situation.