Effects of Tea (Camellia sinensis) or its Bioactive Compounds l-Theanine or l-Theanine plus Caffeine on Cognition, Sleep, and Mood in Healthy Participants: A Systematic Review and Meta-Analysis of Randomized Controlled Trials.
- 2025-05-02
- Meta-Analysis
- Nutrition reviews 83(10)
- Edward R Payne
- Magaly Aceves-Martins
- Joy Dubost
- Arno Greyling
- Baukje de Roos
- PubMed: 40314930
- DOI: 10.1093/nutrit/nuaf054
- High evidence
- Adults
There was a small-to-moderate difference between the effects of theanine and placebo that favored theanine on choice reaction time (h1: SMD, -0.35; 95% CI,-0.61, -0.10)
- Effect
- Beneficial
- Effect size
- Moderate
- Significant
- Yes