brain fog
noun
: a usually temporary state of diminished mental capacity marked by inability to concentrate or to think or reason clearly
Examples of brain fog in a Sentence
Recent Examples on the Web
About 7% of U.S. adults — nearly 18 million people — report enduring symptoms such as shortness of breath, extreme fatigue and brain fog.
—
Jerome M. Adams, The Mercury News, 22 Oct. 2024
From food cravings to brain fog, blood sugar spikes may be the cause
Want to live healthier longer?
—Sara Chernikoff, USA TODAY, 26 Sep. 2024
Fatigue associated with long COVID has symptoms that can impair daily functioning, such as exhaustion, muscle weakness and aches, and brain fog.
—Heather Jones, Verywell Health, 11 Sep. 2024
Researchers categorized those with long COVID through a scoring system using such symptoms as brain fog, gastrointestinal problems, dizziness and palpitations.
—Adriel Bettelheim, Axios, 13 Aug. 2024
See all Example Sentences for brain fog 
Jerome M. Adams, The Mercury News, 22 Oct. 2024
From food cravings to brain fog, blood sugar spikes may be the cause
Want to live healthier longer?
—Sara Chernikoff, USA TODAY, 26 Sep. 2024
Fatigue associated with long COVID has symptoms that can impair daily functioning, such as exhaustion, muscle weakness and aches, and brain fog.
—Heather Jones, Verywell Health, 11 Sep. 2024
Researchers categorized those with long COVID through a scoring system using such symptoms as brain fog, gastrointestinal problems, dizziness and palpitations.
—Adriel Bettelheim, Axios, 13 Aug. 2024
See all Example Sentences for brain fog
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'brain fog.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
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“Brain fog.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/brain%20fog. Accessed 5 Nov. 2024.
Copy CitationMedical Definition
brain fog
noun
: a usually temporary state of diminished mental capacity marked by inability to concentrate or to think or reason clearly
This brain fog can be a result of being overly stressed, tired, carrying extra weight, consuming too many calories or consistently consuming a diet poor in nutrients.—Kylie Helgens, The Gazette (Cedar Rapids, Iowa)
Kylie Helgens, The Gazette (Cedar Rapids, Iowa)Love words? Need even more definitions?
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