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
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In adults, the most common long COVID symptoms include fatigue and brain fog, but for children the condition can look different.
—
Samuel Axon, Ars Technica, 27 Sep. 2024
Nearly 1 in 3 Americans may have an undiagnosed iron deficiency, a problem that can lead to fatigue, brain fog and difficulty concentrating, a new study suggests.
—Linda Carroll, NBC News, 24 Sep. 2024
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
See all Example Sentences for brain fog 
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Samuel Axon, Ars Technica, 27 Sep. 2024
Nearly 1 in 3 Americans may have an undiagnosed iron deficiency, a problem that can lead to fatigue, brain fog and difficulty concentrating, a new study suggests.
—Linda Carroll, NBC News, 24 Sep. 2024
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
See all Example Sentences for brain fog
Dictionary Entries Near brain fog
Cite this Entry
“Brain fog.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/brain%20fog. Accessed 21 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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