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
For example, people with celiac disease often have bowel trouble and brain fog — this should be assessed by a physician and treated accordingly.
—
Trisha Pasricha, Washington Post, 1 July 2024
The stakes are high — prolonged sleeplessness can cause brain fog, worsen anxiety and depression, and even increase risk of heart attack and stroke.
—Madeline Heim, Journal Sentinel, 28 June 2024
Briggs has dealt with dozens of symptoms ranging from a sore throat to memory loss and brain fog.
—Liz Friden, Fox News, 27 June 2024
The typical symptoms associated with long COVID-19, like brain fog, dizziness and fatigue are consistent with dysregulation of the autonomic nervous system.
—Delaney Nothaft, USA TODAY, 18 June 2024
See all Example Sentences for brain fog 
Trisha Pasricha, Washington Post, 1 July 2024
The stakes are high — prolonged sleeplessness can cause brain fog, worsen anxiety and depression, and even increase risk of heart attack and stroke.
—Madeline Heim, Journal Sentinel, 28 June 2024
Briggs has dealt with dozens of symptoms ranging from a sore throat to memory loss and brain fog.
—Liz Friden, Fox News, 27 June 2024
The typical symptoms associated with long COVID-19, like brain fog, dizziness and fatigue are consistent with dysregulation of the autonomic nervous system.
—Delaney Nothaft, USA TODAY, 18 June 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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Cite this Entry
“Brain fog.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/brain%20fog. Accessed 15 Jul. 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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