July 2015 PMID 25761837

A double-blind, placebo-controlled study evaluating the effects of caffeine and L-theanine both alone and in combination on cerebral blood flow, cognition and mood.

F L Dodd, D O Kennedy, L M Riby, C F Haskell-Ramsay

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Mentions

46
Peak: 3 in Jun 2021
across 6 sources since May 2019

Extended reach

420,894
potential audience

Total likes

16,622

Video views

413,048

Mentions per month

May 2019 – Sep 2025

Where it's discussed

  • News22 articles
  • X / Twitter9 posts
  • YouTube8 videos
  • Blogs3 articles
  • Facebook2 posts
  • Reddit2 posts

AI synopsis

What people are saying

The overall discussions demonstrate a moderate level of interest and agreement, with users mentioning the positive influence of tea, caffeine, and L-theanine on brain health, such as 'Regular tea consumption influences aspects of brain function' and 'More research needed.' The tone varies from curiosity to cautious optimism, using words like 'influences' and 'potential benefits,' which reflect both recognition of the study's relevance and understanding of scientific limitations.

AgreementModerate agreement

Most discussions acknowledge the potential benefits of tea, caffeine, and L-theanine, with some referencing the study’s findings on brain function and mood.

InterestModerate interest

Comments show moderate curiosity, particularly around the effects of tea and caffeine on cerebral blood flow and mood, though some are more speculative or casual.

EngagementModerate engagement

The posts engage by referencing scientific concepts, study details, and suggesting further research, reflecting a medium level of depth.

ImpactNeutral impact

While there's recognition of potential health implications, many comments imply that more research is needed before firm conclusions or widespread changes are made.

Top posts

Most liked on X and Bluesky
Tea Advisory Panel
@TeaAdvisoryPan · X

Regular tea consumption, especially black tea containing bioactive components including caffeine & L-theanine, influences aspects of brain function including cerebral blood flow. More research needed. #TeaAndBrainHealth #TeaAndHealth #MentalHealthMatters https://t.co/ACpVchbDsl https://t.co/F0ergmPP6t

Jun 16, 2021 · 5 likes · 1 share · 1,283 followers View post →
Tea Advisory Panel
@TeaAdvisoryPan · X

Regular tea consumption, especially black tea containing bioactive components including caffeine and L-theanine, influences aspects of brain function including cerebral blood flow. More research needed. #TeaAndBrainHealth #TeaAndHealth #MentalHealthMatters https://t.co/ACpVchbDsl https://t.co/LV7a64g99p

Jul 27, 2021 · 4 likes · 1 share · 1,283 followers View post →
teacoffeenews
@teacoffeenews2 · X

A double-blind, placebo-controlled study evaluating the effects of caffeine and L-theanine both alone and in combination on cerebral blood flow, cognition and mood - PubMed https://t.co/d85gTCTliF

Jun 16, 2021 · 1 like · 1,007 followers View post →
Ǝᴅᴜ ᴅᴇ Ƨᴀɴ ϑɪᴄᴇɴᴛᴇ
@EdeSanVicente · X

https://t.co/FI8aa3WGiN Caffeine and Mood A double-blind, placebo-controlled study evaluating the effects of caffeine and L-theanine both alone and in combination on cerebral blood flow, cognition and mood ...

Feb 25, 2024 · 1,529 followers View post →
The Tea Enthusiasts
@TeaEnthusiasts · X

RT @TeaAdvisoryPan: Regular tea consumption, especially black tea containing bioactive components including caffeine and L-theanine, influe…

Jul 27, 2021 · 1 share · 1,388 followers View post →
My Tea Connection
@MyTeaConnection · X

Tea Study 8/100, Can switching from coffee to tea improve blood flow to the brain? I'm an American tea lover living in China #tea #science #scientificresearch #ltheanine #caffeine  Study: https://t.co/I3ybHPbZMz Music: “Mysterious Passenger” By Purrple Cat https://t.co/J6J7W7kHqJ https://t.co/gNpNCYUCTi

Apr 10, 2024 · 740 followers View post →

All mentions

My Tea Connection
@MyTeaConnection · X

Tea Study 8/100, Can switching from coffee to tea improve blood flow to the brain? I'm an American tea lover living in China #tea #science #scientificresearch #ltheanine #caffeine  Study: https://t.co/I3ybHPbZMz Music: “Mysterious Passenger” By Purrple Cat https://t.co/J6J7W7kHqJ https://t.co/gNpNCYUCTi

Apr 10, 2024 · 740 followers View post →
Ǝᴅᴜ ᴅᴇ Ƨᴀɴ ϑɪᴄᴇɴᴛᴇ
@EdeSanVicente · X

https://t.co/FI8aa3WGiN Caffeine and Mood A double-blind, placebo-controlled study evaluating the effects of caffeine and L-theanine both alone and in combination on cerebral blood flow, cognition and mood ...

Feb 25, 2024 · 1,529 followers View post →
lilo
@wavveswork · X

https://t.co/nu6Tn1Slsa

Oct 10, 2023 · 147 followers View post →
JURISTAS CONTRA LA PROHIBICIÓN
@JProhibicion · X

@DanielS37393832 @TioTxapas @Medicilio Un dos por uno: Estudio sobre los efectos (mención expresa de mejora en rendimiento en las tareas de atención y calificaciones generales del estado de ánim) y declaración de que es la sustancia psicoactiva (sí, una droga) más consumida en el mundo https://t.co/8Si7rxMGwX

Dec 10, 2021 · 360 followers View post →
The Tea Enthusiasts
@TeaEnthusiasts · X

RT @TeaAdvisoryPan: Regular tea consumption, especially black tea containing bioactive components including caffeine and L-theanine, influe…

Jul 27, 2021 · 1 share · 1,388 followers View post →
Tea Advisory Panel
@TeaAdvisoryPan · X

Regular tea consumption, especially black tea containing bioactive components including caffeine and L-theanine, influences aspects of brain function including cerebral blood flow. More research needed. #TeaAndBrainHealth #TeaAndHealth #MentalHealthMatters https://t.co/ACpVchbDsl https://t.co/LV7a64g99p

Jul 27, 2021 · 4 likes · 1 share · 1,283 followers View post →
teacoffeenews
@teacoffeenews2 · X

A double-blind, placebo-controlled study evaluating the effects of caffeine and L-theanine both alone and in combination on cerebral blood flow, cognition and mood - PubMed https://t.co/d85gTCTliF

Jun 16, 2021 · 1 like · 1,007 followers View post →
catatea
@cata_tea · X

RT @TeaAdvisoryPan: Regular tea consumption, especially black tea containing bioactive components including caffeine & L-theanine, influenc…

Jun 16, 2021 · 1 share · 104 followers View post →
Tea Advisory Panel
@TeaAdvisoryPan · X

Regular tea consumption, especially black tea containing bioactive components including caffeine & L-theanine, influences aspects of brain function including cerebral blood flow. More research needed. #TeaAndBrainHealth #TeaAndHealth #MentalHealthMatters https://t.co/ACpVchbDsl https://t.co/F0ergmPP6t

Jun 16, 2021 · 5 likes · 1 share · 1,283 followers View post →