brain fog

noun

Definition of brain fog

: 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 All of them have had health issues of one sort or another — nosebleeds, migraines and brain fog — after spending time at Sky Valley. Author: Tammy Webber, Martha Irvine, Anchorage Daily News, "Toxic PCBs linger in schools as EPA and lawmakers fail to act," 16 Oct. 2019 All of them have had health issues of one sort or another — nosebleeds, migraines and brain fog — after spending time at Sky Valley. Washington Post, "Toxic PCBs linger in schools; EPA, lawmakers fail to act," 16 Oct. 2019 Menopause mostly deserves its bad rap, what with frustration-inducing symptoms like hot flashes, brain fog, weight gain, and mood swings. Beth Janes, Good Housekeeping, "6 Surprising Things You Didn't Know About Menopause," 10 Sep. 2019 Early signs of gut fermentation syndrome can include mood changes, delirium and brain fog, the researchers wrote, even before a patient starts exhibiting symptoms of alcohol inebriation. Harmeet Kaur, CNN, "No one believed him when he said he hadn't been drinking. Then researchers found his body was producing alcohol," 25 Oct. 2019 Early symptoms of auto-brewery syndrome may be mood changes, brain fog and delirium, instead of signs of intoxication, according to the Richmond study. The Washington Post, oregonlive, "Man’s stomach was brewing its own beer," 24 Oct. 2019 Their only prominent liberalish proponent is Gwyneth Paltrow, whose web site, Goop, sells Nerd Alert, a signature stack that promises to banish brain fog. Richard Cooke, The New Republic, "The conservative commentariat’s love affair with nootropics," 3 Sep. 2019 The drawbacks of sleep deprivation aren’t just limited to next-day irritation and brain fog. Carolyn L. Todd, SELF, "9 Small but Impactful Health Habits to Lock Down in Your 20s," 19 Apr. 2019 Beating brain fog is more easily achieved with a Starbucks run. Jaclyn London, Ms, Rd, Cdn, Good Housekeeping, "Keto Diet Pills and Supplements May Hurt Your Health and Waste Your Money," 16 Jan. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'brain fog.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of brain fog

1853, in the meaning defined above

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Time Traveler for brain fog

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The first known use of brain fog was in 1853

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Statistics for brain fog

Last Updated

8 Dec 2019

Cite this Entry

“Brain fog.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/brain%20fog. Accessed 15 December 2019.

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More Definitions for brain fog

brain fog

noun

Medical Definition of brain fog

: 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), 23 Mar. 2013

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