ke·​to·​sis | \ kē-ˈtō-səs How to pronounce ketosis (audio) \

Definition of ketosis

: an abnormal increase of ketone bodies in the body

Other Words from ketosis

ketotic \ kē-​ˈtä-​tik How to pronounce ketosis (audio) \ adjective

Examples of ketosis in a Sentence

Recent Examples on the Web The strikers’ bodies were starting to go through ketosis, where the body starts metabolizing its own fat and glucose stores, Marya said. Annie Vainshtein, San Francisco Chronicle, 4 Feb. 2022 Using effective dietary principles like ketosis and intermittent fasting, Level II will help heal the gut, restore the metabolism, release years of toxic build-up, and hit reset on the body’s systems—revealing a healthier, more vibrant-feeling you. Meggen Taylor, Forbes, 28 Jan. 2022 Ketone esters are substances that contain ketones and can induce a state of ketosis similar to what follows near-starvation or a low-carb, high-fat diet. Amby Burfoot, Outside Online, 29 July 2020 Today, ironically, ketosis is fashionable with the keto diet, which proponents say causes substantial weight loss and can help those with Type 2 diabetes dramatically improve their blood sugar levels, which fall when people avoid carbs. Bryant Stamford, The Courier-Journal, 7 Oct. 2021 In the past, ketosis, shifting from carbs to ketones, was viewed as problematic. Bryant Stamford, The Courier-Journal, 7 Oct. 2021 This can range from intermittent fasting and ketosis to injecting oneself with gene-editing technology or implanting a chip in one’s hand, apparently. Esther Mobley, San Francisco Chronicle, 29 July 2021 Intermittent fasting places the body in a state of ketosis on the 1,000-calorie days, which can change the biomarkers of aging and possibly extend longevity, said Roizen, who has followed this diet for about four years. cleveland, 28 July 2021 The odor is caused by ketones, chemicals produced when the body begins to burn fat instead of glucose for energy, a metabolic state known as ketosis. Emily Anthes, New York Times, 11 July 2021 See More

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.

First Known Use of ketosis

1917, in the meaning defined above

History and Etymology for ketosis

ket(one) + -osis (after acidosis)

Note: The word ketosis was apparently introduced, somewhat hesitantly, by the American physician Frederick Madison Allen (1879-1964) in "The Role of Fat in Diabetes," American Journal of the Medical Sciences, series 2, vol. 153, no. 3 (March, 1917), p. 335: "The second basis of definition [of acidosis] is that of need and distinctiveness. Diminished alkalinity, increased hydrogen ion concentration, lowering of carbon dioxide, decrease of buffer salts, and (for the symptoms of these changes) acid intoxication—all these terms have definite meanings, and to appropriate the name acidosis for any one of them is merely to create a useless synonym. No other name but acidosis exists for the metabolic process which it denotes. Ketonuria and ketonemia have their accurate place but do not cover the ground. Possibly the word ketosis might be suggested and used for special purposes, but the change of established usage would be difficult and seems unnecessary."

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The first known use of ketosis was in 1917

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“Ketosis.” Dictionary, Merriam-Webster, Accessed 25 May. 2022.

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More Definitions for ketosis


ke·​to·​sis | \ kē-ˈtō-səs How to pronounce ketosis (audio) \
plural ketoses\ -​ˌsēz How to pronounce ketosis (audio) \

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 How to pronounce ketosis (audio) \ adjective

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