l-Theanine reduces psychological and physiological stress responses

@article{Kimura2007lTheanineRP,
  title={l-Theanine reduces psychological and physiological stress responses},
  author={Kenta Kimura and M. Ozeki and L. Juneja and H. Ohira},
  journal={Biological Psychology},
  year={2007},
  volume={74},
  pages={39-45}
}
  • Kenta Kimura, M. Ozeki, +1 author H. Ohira
  • Published 2007
  • Medicine
  • Biological Psychology
  • L-Theanine is an amino acid contained in green tea leaves which is known to block the binding of L-glutamic acid to glutamate receptors in the brain. Because the characteristics of L-Theanine suggest that it may influence psychological and physiological states under stress, the present study examined these possible effects in a laboratory setting using a mental arithmetic task as an acute stressor. Twelve participants underwent four separate trials: one in which they took L-Theanine at the… CONTINUE READING
    241 Citations

    Figures, Tables, and Topics from this paper

    Effects of L-theanine or caffeine intake on changes in blood pressure under physical and psychological stresses
    • 59
    • Highly Influenced
    The Effects of Green Tea Amino Acid L-Theanine Consumption on the Ability to Manage Stress and Anxiety Levels: a Systematic Review
    • 8
    • Highly Influenced
    • PDF
    Protective effect of l-theanine on chronic restraint stress-induced cognitive impairments in mice
    • 41
    • PDF
    Anti-stress Effect of Green Tea with Lowered Caffeine on Humans: A Pilot Study.
    • 6
    • PDF
    The effects of l-theanine, caffeine and their combination on cognition and mood
    • 166
    • PDF
    Behavioral and molecular evidence for psychotropic effects in l-theanine
    • 33

    References

    SHOWING 1-10 OF 37 REFERENCES
    Effect of theanine on norepinephrine and serotonin levels in rat brain.
    • 48
    Reduction effect of theanine on blood pressure and brain 5-hydroxyindoles in spontaneously hypertensive rats.
    • 172
    • PDF
    Inhibiting Effects of Theanine on Caffeine Stimulation Evaluated by EEG in the Rat
    • 105
    • Highly Influential
    Effect of Theanine, r-Glutamylethylamide, on Brain Monoamines and Striatal Dopamine Release in Conscious Rats
    • 146
    • Highly Influential
    Possible involvement of group I mGluRs in neuroprotective effect of theanine.
    • 46
    • Highly Influential
    Reactivity of immune, endocrine and cardiovascular parameters to active and passive acute stress
    • 74
    Cardiovascular reactivity and the course of immune response to an acute psychological stressor.
    • 141
    Rapid Communication: Adrenalectomy Attenuates Stress‐Induced Elevations in Extracellular Glutamate Concentrations in the Hippocampus
    • 342