How to Use ketone in a Sentence

ketone

noun
  • The last way is to take a supplement that has ketones in it.
    — Dominique Mosbergen, Time, 16 Oct. 2025
  • About a decade ago, drinkable forms of ketones went on the market.
    — Alex Hutchinson, Outside, 23 Dec. 2025
  • When excess ketones build up in the body, blood becomes acidic.
    — Cynthia Sass, Mph, Health.com, 14 Oct. 2019
  • Your body then tries to burn it off, which causes your liver to produce ketones.
    — Danielle Weiss, Verywell Health, 29 Aug. 2023
  • The byproduct is ketones, which can be used for fuel instead.
    — Sandy Bauers, Philly.com, 13 July 2018
  • The best and most affordable method of doing this is with at-home ketone test strips.
    — Bestreviews, Mercury News, 23 Jan. 2026
  • These ketones then travel to the brain and feed the brain, replacing glucose.
    — Susie Neilson, The Cut, 26 Jan. 2018
  • How to use a ketone test strip If using urine testing strips, the process is very simple.
    — Bestreviews, Mercury News, 23 Jan. 2026
  • This is a state in which fat stores in the body are broken down into ketones, which then fuel the muscles and brain.
    — Liz Krieger, Harper's BAZAAR, 18 Sep. 2017
  • One of them is testing to see what level of ketone supplements are best for people.
    — Dominique Mosbergen, Time, 16 Oct. 2025
  • The breakdown of fat results in compounds called ketones, hence the name ketosis.
    — Bruce Y. Lee, Forbes, 18 Feb. 2024
  • When this occurs, the body uses fats for energy and produces ketones.
    — Heidi Cope, Health, 23 Dec. 2024
  • There, the fat converts to ketones and releases back into the bloodstream.
    — Cynthia Sass, Mph, Rd, Health, 5 Sep. 2023
  • People vary in the length of fasting needed to generate ketones.
    — Matt Fuchs, TIME, 9 Dec. 2024
  • This occurs when the body stores too many ketones—acids produced as a byproduct of burning fat—and the blood becomes too acidic.
    — Amanda MacMillan, Health, 16 June 2023
  • Acetone is part of a group of molecules called ketones, which play a role in your metabolism.
    — Sherri Gordon, Health, 14 Aug. 2024
  • After a few days, when these reserves are all used up, the body turns to stored fat and the liver converts the fat into ketones.
    — Hannah Millington, MSNBC Newsweek, 19 Sep. 2025
  • After a few days, when these reserves are all used up, the body turns to stored fat and the liver converts the fat into ketones.
    — Hannah Millington, MSNBC Newsweek, 16 Oct. 2025
  • The body begins to break down muscle and fat for energy, which causes a buildup of acids – called ketones – in the blood and urine.
    — Adrianna Rodriguez, USA TODAY, 25 May 2023
  • When carb intake is low, your body switches to ketones as an alternate energy source.
    — Amy Brownstein, Verywell Health, 16 Mar. 2026
  • During ketosis, the body breaks down fat into ketones and uses them for fuel.
    — Chelsea Rae Bourgeois, Health, 12 Jan. 2026
  • Brain fog may be due to your body and brain transitioning from using glucose to ketones as a source of energy.
    — Brittany Lubeck, Verywell Health, 28 Nov. 2025
  • This time, the doctor found something called ketones in my urine, which meant my body was breaking down more of itself for energy than is safe.
    — Jenn Morson, Redbook, 5 Sep. 2017
  • Take too little, and your glucose levels will rise, filling the body with dangerous levels of ketones.
    — Jacob Brogan, Slate Magazine, 1 May 2017
  • This is called ketosis, because the body is using ketones, a byproduct of fat burning, for fuel.
    — Tom Gavin, EverydayHealth.com, 11 Nov. 2025
  • While the fat is broken down, your breath can smell sweeter thanks to the release of ketones, including acetone, as a byproduct.
    — Courtney Linder, Popular Mechanics, 12 Dec. 2019
  • With prolonged restriction, fat is broken down into ketones for fuel.
    — Maggie O'Neill, Verywell Health, 16 Mar. 2026
  • An entirely different set of conditions would be needed if the oxygen was present as a ketone.
    — John Timmer, Ars Technica, 5 Oct. 2022
  • There will also be add-ons, like a multivitamin and a ketone supplement.
    — Christopher Cason, GQ, 5 June 2018
  • Both cat urine and black currant bushes contain varying concentrations of this ketone.
    — Popular Science Team, Popular Science, 5 June 2024

Some of these examples are programmatically compiled from various online sources to illustrate current usage of the word 'ketone.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

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