Matcha is finely ground powder made from the leaves of specially grown and processed green tea. The biologically active compounds found in matcha include theanine, caffeine, phenolic acids, chlorophyll, tea catechins, rutin, quercetin, and vitamin C.
In this randomized controlled trial in older adults who were experiencing cognitive decline, supplementation with matcha powder did not benefit cognitive function.
Caffeine alone outperforms matcha for improving reaction time
