keto flu

American  

[kee-toh floo] / ˈki toʊ ˌflu /

noun

1. a temporary feeling of illness or physical unease often experienced by those starting a ketogenic diet, characterized by fatigue, headaches, muscle soreness, etc., as the body adapts to using fat instead of carbohydrates for fuel.

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Etymology

Origin of keto flu

First recorded in 2010–15

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