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chemo brain

American  
[kee-moh breyn] / ˈki moʊ ˌbreɪn /

noun

Medicine/Medical Informal.
  1. a common side effect of some cancer treatments that is characterized by cognitive impairments, such as memory and recall difficulties, confusion, difficulty concentrating, or loss of mental alertness.


Example Sentences

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Many people undergoing chemotherapy experience a frustrating side effect often called "chemo brain."

From Science Daily Jun. 10, 2026

Patients undergoing chemotherapy often experience cognitive effects such as memory impairment and difficulty concentrating -- a condition commonly known as "chemo brain."

From Science Daily Mar. 6, 2024

She completed that with "chemo brain" but said the university was "amazing" at supporting her.

From BBC Feb. 25, 2022

Women’s symptoms of chemo brain generally paralleled their activity levels.

From New York Times Oct. 6, 2021

Marjie Popkin thought she had chemo brain, that fuzzy-headed forgetful state she figured was a result of her treatment for ovarian cancer.

From Seattle Times Dec. 18, 2010

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