ke·​to·​sis | \kē-ˈtō-səs \

Definition of ketosis 

: an abnormal increase of ketone bodies in the body

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Other Words from ketosis

ketotic \ kē-​ˈtä-​tik \ adjective

Examples of ketosis in a Sentence

Recent Examples on the Web

When no glycogen is available for energy, the body does go into ketosis, turning to fat for energy. SELF, "What You Need to Know Before Trying Intermittent Fasting," 7 Nov. 2018 Some celebrities and sports stars embrace them, and people who fast use the regimen to further push their body into ketosis. Mark Barna, Discover Magazine, "Not So Fast," 24 Sep. 2018 The keto diet is all about proteins and extra fat — with very little carbs — to get to a state of ketosis, a metabolic process where the body burns fat instead of glucose for energy. Michele Corriston,, "Mama June Posts Old Swimsuit Photo After Gaining 25 Lbs. Back: 'I'm Still Beautimess!'," 4 July 2018 Here’s where keto gets tough: A few extra carbs a day, even from vegetables, can knock you out of ketosis. Jacqueline Detwiler, Popular Mechanics, "I Hacked My Body So You Don't Have To," 25 June 2018 The goal is to achieve ketosis, a state in which the body uses fat as its primary fuel, rather than carbs. Blake Bakkila,, "This Woman Has Lost 40 Pounds in 8 Months Since Starting the Keto Diet," 6 June 2018 The Scarsdale Diet was also ahead of its time in its focus on ketosis—a metabolic state related to fat burning. Ben Widdicombe, Town & Country, "An Unofficial History of Rich Women and Their Diets," 10 Apr. 2018 The diet's aim of inducing ketosis — a metabolic process where the body uses fat instead of carbs for energy — can backfire tremendously. Caroline Picard, Good Housekeeping, "What You Can (and Can’t) Eat on a Keto Diet," 3 Apr. 2018 The carbohydrate reduction should eventually move your body into ketosis, prompting the body to access fat stores as its primary source of fuel, rather than carbohydrates, which are typically the primary source. Sara Angle, Outside Online, "An Athlete's Guide to #Trending Diets," 20 Mar. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'ketosis.' 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 ketosis

1917, in the meaning defined above

History and Etymology for ketosis

New Latin

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Last Updated

13 Nov 2018

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Time Traveler for ketosis

The first known use of ketosis was in 1917

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More Definitions for ketosis


ke·​to·​sis | \kē-ˈtō-səs \
plural ketoses\ -​ˌsēz \

Medical Definition of ketosis 

1 : an abnormal increase of ketone bodies in the body in conditions of reduced or disturbed carbohydrate metabolism (as in uncontrolled diabetes mellitus) — compare acidosis, alkalosis

2 : a nutritional disease of cattle and sometimes sheep, goats, or swine that is marked by reduction of blood sugar and the presence of ketone bodies in the blood, tissues, milk, and urine and is associated with digestive and nervous disturbances

Other Words from ketosis

ketotic \ -​ˈtät-​ik \ adjective

More from Merriam-Webster on ketosis Encyclopedia article about ketosis

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obstinately defiant of authority

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