J Am Coll Nutr April 2012 PMID 22855911

Cognitive performance and dehydration.

Ana Adan

Mentions

132
Peak: 6 in Jul 2021
across 5 sources since Sep 2019

Extended reach

301,962
potential audience

Total likes

2,611

Video views

76,919

Mentions per month

Sep 2019 – Oct 2025

Where it's discussed

  • News82 articles
  • X / Twitter36 posts
  • Facebook9 posts
  • Blogs3 articles
  • YouTube2 videos

AI synopsis

What people are saying

The analysis reveals widespread agreement on the detrimental effects of mild dehydration on cognition, exemplified by language such as 'impairs performance' and 'brain shrinkage,' with some users emphasizing personal and practical implications like better performance in sports or mental tasks. The tone and choice of words reflect both scientific understanding and everyday relevance, enhancing the overall recognition of dehydration's impact on mental function.

AgreementStrong agreement

Most discussions strongly support the idea that dehydration significantly impairs cognitive functions, with repeated references to the 2% dehydration threshold and its effects on quick mental tasks.

InterestHigh interest

Discussions show high interest in the topic, citing sources and practical implications like hydration’s impact on brain health, performance, and even daily issues.

EngagementModerate engagement

Many discussions reference scientific facts, personal insights, and practical advice, demonstrating thoughtful engagement with the publication.

ImpactHigh impact

The conversations highlight the importance of hydration for cognitive health and performance, indicating a recognition of its high relevance for health and productivity.

Abstract in brief

  • Mild dehydration, even as little as 2%, can impair cognitive functions such as attention, psychomotor skills, and immediate memory, while long-term and working memory tend to be less affected, especially after moderate physical activity.
  • The impact of dehydration on cognition varies across studies because of different research methods, including how dehydration is induced, how cognitive performance is measured, and participant characteristics, highlighting the need for standardized research approaches.
  • Dehydration negatively affects internal body balance, which can impair cognitive performance across different age groups, but more research is needed to fully understand these effects and improve study consistency.

Top posts

Most liked on X and Bluesky
Vitamins Improve Memory
@VitaminsMemory · X

Your #brain is made mostly of water. Mild dehydration has been shown to cause brain shrinkage and #memory impairment. https://t.co/EfP5LeFlcc #healthyeating #HealthyLiving #healthylifestyle #studying #learning #working https://t.co/gLPwlpp8Qe

Jul 18, 2021 · 7 likes · 3 shares · 3,785 followers View post →
Vitamins Improve Memory
@VitaminsMemory · X

Your #brain is 73% water and it takes only 2% dehydration to diminish your #memory, #attention, and other cognitive skills. To illustrate how easily this can happen, you can lose 10% of your body’s water after a strenuous physical workout. https://t.co/EfP5LeFlcc #brainhealth https://t.co/gsgQcW1mpj

Mar 30, 2021 · 4 likes · 5 shares · 3,785 followers View post →
Hugo Chrost
@chrost_hugo · X

Source: DOI: 10.1080/07315724.2012.10720011

Jan 11, 2022 · 3 likes · 43,299 followers View post →
Vitamins Improve Memory
@VitaminsMemory · X

Your #brain is made mostly of water. Mild dehydration has been shown to cause brain shrinkage and #memory impairment. https://t.co/EfP5LeFlcc #healthyeating #HealthyLiving #healthylifestyle #studying #learning #working https://t.co/FdZyyERpq3

May 22, 2021 · 3 likes · 4 shares · 3,785 followers View post →
#hello I'm Dr Kirsty
@KirstyChallen · X

@DrLindaDykes @JoeyClo1 "You need me to think, so I need to drink"? https://t.co/YYlbXDJgnC

Jul 27, 2021 · 2 likes · 4,144 followers View post →
菊池春太
@Shunta_Swam · X

一年を通して気をつけたいですが、これからの季節はより普段から気を使いたいですね☀️ 練習中だけでなく、ドライの時間からしっかり水分補給を! 参考文献 https://t.co/yr0tVMAILO https://t.co/vkqiQXByeB https://t.co/acWUrjCZdV

Jun 4, 2023 · 2 likes · 86 followers View post →

All mentions

Med Fact Files
@MedFiles · X

Your brain

Oct 14, 2025 · 5 followers View post →
MindTactic
@MindTactic · X

Jul 15, 2025 · 1 like · 37 followers View post →
TommyGunn
@gunn59058 · X

@j2ooj Might explain all those bombs dropped on Belgorod: "Being dehydrated by just 2% impairs performance in tasks that require attention, psychomotor, and immediate memory skills, as well as assessment of the subjective state." https://t.co/oyuPebUeA6

Jul 24, 2024 · 325 followers View post →
BioVison
@davidleipi · X

"Being dehydrated by just 2% impairs performance in tasks that require attention, psychomotor, and immediate memory skills, as well as assessment of the subjective state" doi: 10.1080/07315724.2012.10720011

Jul 19, 2024 · 13 followers View post →
boisselle
@seanboisselle · X

Take a sip of water. Being dehydrated by just 2% impairs performance in tasks that require attention, psychomotor, and immediate memory skills, as well as assessment of the subjective state. https://t.co/6TwMv6tl0e

May 19, 2024 · 1,478 followers View post →
boisselle
@seanboisselle · X

This might explain some issues. Being dehydrated by just 2% impairs performance in tasks that require attention, psychomotor, and immediate memory skills, as well as assessment of the subjective state. https://t.co/6TwMv6tl0e

May 19, 2024 · 1,478 followers View post →
boisselle
@seanboisselle · X

This might explain some of your (or my) issues. Being dehydrated by just 2% impairs performance in tasks that require attention, psychomotor, and immediate memory skills, as well as assessment of the subjective state. https://t.co/6TwMv6tl0e

May 19, 2024 · 1,478 followers View post →
boisselle
@seanboisselle · X

This might explain some of your issues. Being dehydrated by just 2% impairs performance in tasks that require attention, psychomotor, and immediate memory skills, as well as assessment of the subjective state. https://t.co/6TwMv6tl0e

May 19, 2024 · 1,478 followers View post →
คุณ N
@nozyindahaus · X

@powerprincesss https://t.co/2tk59mLhfw

Mar 14, 2024 · 40 followers View post →
Speech to Note
@speechtonote · X

• Skipping breakfast can reduce cognitive function by 20% but, we are humans so all I would say is Eat Light :) • Staying hydrated can improve cognitive performance by 13% (Source: https://t.co/edQ5auqA2Q).

Mar 7, 2024 · 159 followers View post →
Paul. Yma o Hyd
@unwizemonkey · X

@Greenfleeves @BrexitPirates @B_E_Andre The impacts of hydration on cognitive function is well researched. Remember, most hydration is achieved through consumption of foodstuffs and not just liquid intake. https://t.co/RqT1zPng4a

Jan 12, 2024 · 1 like · 1,991 followers View post →
Amanda Kavner PhD
@DrKavner · X

Your #brain is 73% water. It takes only 2% dehydration to affect your #attention, #memory, and other #cognitiveskills. https://t.co/pY0GXoOTgP https://t.co/fKvQQT4Rnl https://t.co/05NV96ShzO

Dec 3, 2023 · 2,200 followers View post →
菊池春太
@Shunta_Swam · X

一年を通して気をつけたいですが、これからの季節はより普段から気を使いたいですね☀️ 練習中だけでなく、ドライの時間からしっかり水分補給を! 参考文献 https://t.co/yr0tVMAILO https://t.co/vkqiQXByeB https://t.co/acWUrjCZdV

Jun 4, 2023 · 2 likes · 86 followers View post →
Nutter
@nuttermeme · X

@TheLeeMcLaren Sources: 1. https://t.co/4s3vUzJma5 2. https://t.co/shxrCPHzg0 3. https://t.co/veviPhPOfB 4. https://t.co/XHZRDsNESZ 5. https://t.co/YRZko0BvZh https://t.co/4s3vUzJma5

Apr 19, 2023 · 9,504 followers View post →
Dr. Peter San Pedro DPT
@leet_pt · X

References: Adan, A. (2012). Cognitive performance and dehydration. Journal of the American College of Nutrition Casa, D. J., et al. (2000). National athletic trainers' association position statement: fluid replacement for athletes. Journal of Athletic Training

Apr 18, 2023 · 922 followers View post →
T&F Medicine & Healthcare
@tandfmedicine · X

As we head into summer it's important to drink plenty of fluids

Jun 23, 2022 · 4,199 followers View post →
Hugo Chrost
@chrost_hugo · X

Source: DOI: 10.1080/07315724.2012.10720011

Jan 11, 2022 · 3 likes · 43,299 followers View post →
#hello I'm Dr Kirsty
@KirstyChallen · X

@DrLindaDykes @JoeyClo1 "You need me to think, so I need to drink"? https://t.co/YYlbXDJgnC

Jul 27, 2021 · 2 likes · 4,144 followers View post →
HC Athletic Training
@Hanover_AT · X

RT @VitaminsMemory: Your #brain is made mostly of water. Mild dehydration has been shown to cause brain shrinkage and #memory impairment.…

Jul 18, 2021 · 3 shares · 273 followers View post →
Bill Gassett
@massrealty · X

RT @VitaminsMemory: Your #brain is made mostly of water. Mild dehydration has been shown to cause brain shrinkage and #memory impairment.…

Jul 18, 2021 · 3 shares · 30,623 followers View post →
Avigal
@AvigalwIsrael · X

RT @VitaminsMemory: Your #brain is made mostly of water. Mild dehydration has been shown to cause brain shrinkage and #memory impairment.…

Jul 18, 2021 · 3 shares · 6,311 followers View post →
Vitamins Improve Memory
@VitaminsMemory · X

Your #brain is made mostly of water. Mild dehydration has been shown to cause brain shrinkage and #memory impairment. https://t.co/EfP5LeFlcc #healthyeating #HealthyLiving #healthylifestyle #studying #learning #working https://t.co/gLPwlpp8Qe

Jul 18, 2021 · 7 likes · 3 shares · 3,785 followers View post →
Natan Sebaoun-Bodin
@n_bodin · X

@CaseyThomasRD https://t.co/u2z7HJOtlh Here is a review exposing what you're talking about. Great stuff, important :) Keep hydrated !

Jul 8, 2021 · 39 followers View post →
Gaëlle Queignec
@Chimienaturels · X

Cognitive Performance and Dehydration https://t.co/2n004YcRrI

Jun 17, 2021 · 1,155 followers View post →
AU Hemp Products
@NaturalWellne15 · X

RT @VitaminsMemory: Your #brain is made mostly of water. Mild dehydration has been shown to cause brain shrinkage and #memory impairment.…

May 22, 2021 · 4 shares · 353 followers View post →
HC Athletic Training
@Hanover_AT · X

RT @VitaminsMemory: Your #brain is made mostly of water. Mild dehydration has been shown to cause brain shrinkage and #memory impairment.…

May 22, 2021 · 4 shares · 273 followers View post →
Bill Gassett
@massrealty · X

RT @VitaminsMemory: Your #brain is made mostly of water. Mild dehydration has been shown to cause brain shrinkage and #memory impairment.…

May 22, 2021 · 4 shares · 30,623 followers View post →
Justmemarie2
@Justmemarie2 · X

RT @VitaminsMemory: Your #brain is made mostly of water. Mild dehydration has been shown to cause brain shrinkage and #memory impairment.…

May 22, 2021 · 4 shares · 6,496 followers View post →
Vitamins Improve Memory
@VitaminsMemory · X

Your #brain is made mostly of water. Mild dehydration has been shown to cause brain shrinkage and #memory impairment. https://t.co/EfP5LeFlcc #healthyeating #HealthyLiving #healthylifestyle #studying #learning #working https://t.co/FdZyyERpq3

May 22, 2021 · 3 likes · 4 shares · 3,785 followers View post →
MK
@KhameemrK · X

RT @VitaminsMemory: Your #brain is 73% water and it takes only 2% dehydration to diminish your #memory, #attention, and other cognitive ski…

Mar 30, 2021 · 5 shares · 1,052 followers View post →
Memory Health
@memory_health · X

RT @VitaminsMemory: Your #brain is 73% water and it takes only 2% dehydration to diminish your #memory, #attention, and other cognitive ski…

Mar 30, 2021 · 5 shares · 1,691 followers View post →
Muda Gadgets
@mudagadgets1 · X

RT @VitaminsMemory: Your #brain is 73% water and it takes only 2% dehydration to diminish your #memory, #attention, and other cognitive ski…

Mar 30, 2021 · 5 shares · 29,079 followers View post →
A Healthy Body
@AHealthyBod · X

RT @VitaminsMemory: Your #brain is 73% water and it takes only 2% dehydration to diminish your #memory, #attention, and other cognitive ski…

Mar 30, 2021 · 5 shares · 24,581 followers View post →
Vitamins Improve Memory
@VitaminsMemory · X

Your #brain is 73% water and it takes only 2% dehydration to diminish your #memory, #attention, and other cognitive skills. To illustrate how easily this can happen, you can lose 10% of your body’s water after a strenuous physical workout. https://t.co/EfP5LeFlcc #brainhealth https://t.co/gsgQcW1mpj

Mar 30, 2021 · 4 likes · 5 shares · 3,785 followers View post →
nutri larissa brocolis
@brocolaris · X

@bemtristemesmo fora que ter uma pressão mais baixa não é interessante para um atleta profissional ou quem queira entrar no meio de e-sports e/ou competir/jogar com alta performance.. btw, tem alguns aqui: https://t.co/rbrVgT1Jzf https://t.co/w7Xlwh4RK9 https://t.co/HozupxnsLx

Jul 6, 2020 · 6,280 followers View post →
Malcolm Macleod #FBPE
@Maclomaclee · X

@BrennanSurgeon @elspeth_pitt @colki1983 I raise you https://t.co/1q4ZYKHyUR

Sep 12, 2019 · 1 like · 1,910 followers View post →