L-theanine marketing claims about alpha brain wave enhancement lack experimental support in controlled testing without caffeine, yet the supplement still demonstrates measurable improvements in task accuracy. Researchers found the mechanism of L-theanine's cognitive benefits remains unexplained. — Photo by Griffin Wooldridge on Pexels (Pexels License)
Prof. Giorgi Pkhakadze, MD, MPH, PhD, is Editor-in-Chief of the Georgian Medical Journal and Chair of the Public Health Institute of Georgia (PHIG). He is Professor and Head of the Department of Social and Behavioural Sciences at David Tvildiani Medical University, and Secretary/Treasurer of the UEMS Section of Public Health. ORCID: 0000-0001-7609-4515.
