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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During these years, women can experience fatigue, sleep disturbances, mood changes, brain fog, headaches and muscle and joint soreness.
—
Christine Schuster, Forbes, 25 Mar. 2025
My Menopause Center highlights that many menopause symptoms, such as anxiety, mood swings, depression, brain fog, memory issues, and fatigue, can contribute to low motivation and self-esteem.
—Mark Davis, Newsweek, 16 Mar. 2025
Along with this pain came shortness of breath, chest pain, deep pain in my right shoulder blade, constipation, hip/groin pain, brain fog, and heavy fatigue.
—Jenneh Rishe, Health, 4 Mar. 2025
Researchers from Yale analyzed the blood of 42 people who struggled with post-vaccination syndrome, which includes symptoms such as exercise intolerance, fatigue, brain fog, insomnia, and dizziness, according to Yale researchers.
—People Staff, People.com, 25 Feb. 2025
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Christine Schuster, Forbes, 25 Mar. 2025
My Menopause Center highlights that many menopause symptoms, such as anxiety, mood swings, depression, brain fog, memory issues, and fatigue, can contribute to low motivation and self-esteem.
—Mark Davis, Newsweek, 16 Mar. 2025
Along with this pain came shortness of breath, chest pain, deep pain in my right shoulder blade, constipation, hip/groin pain, brain fog, and heavy fatigue.
—Jenneh Rishe, Health, 4 Mar. 2025
Researchers from Yale analyzed the blood of 42 people who struggled with post-vaccination syndrome, which includes symptoms such as exercise intolerance, fatigue, brain fog, insomnia, and dizziness, according to Yale researchers.
—People Staff, People.com, 25 Feb. 2025
See All Example Sentences for brain fog
Cite this Entry
“Brain fog.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/brain%20fog. Accessed 2 Apr. 2025.
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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