Tea, coffee and green tea consumption and mental health outcomes: A systematic review and meta-analysis of observational and intervention studies on stress and related conditions

This review aims to examine the effects of tea, coffee, and green tea consumption on human cognitive performance mental health. Tea, are widely consumed beverages worldwide contain various bioactive compounds that may influence function Research has suggested caffeine, primary psychoactive compound in coffee can improve function, including attention, alertness, working memory. The effect caffeine be moderated by individual differences metabolism genetic factors. Green contains high levels catechins, which have been linked improved such as attention memory, well reduced risk decline dementia. Theanine, an amino acid found also associated with relaxation anxiety. In addition performance, health outcomes. a lower depression, while symptoms anxiety stress. However, evidence regarding is mixed, further research needed fully understand potential benefits risks these beverages. Additionally, metabolism, factors, other lifestyle factors