Psychological effects of dietary components of tea: caffeine and L-theanine.

摘要: This review summarizes the literature on association between two dietary components of tea, caffeine and L-theanine, psychological outcomes consumption; it also identifies areas for future research. The studies reviewed suggest that caffeinated when ingested at regular intervals, may maintain alertness, focused attention, accuracy modulate more acute effects higher doses caffeine. These findings concur with neurochemical L-theanine brain. interact to enhance performance in terms attention switching ability ignore distraction; this is likely be reflective higher-level cognitive activity sensitive detrimental overstimulation. Further research should investigate interactive caffeine, task complexity, utilize a range ecologically valid outcomes, assess neuroprotective using epidemiological or longer-term intervention among individuals risk neurodegenerative disease.