How to Use endogenous in a Sentence

endogenous

adjective
  • This was not an endogenous thing that the state of Minnesota decided.
    — CBS News, 7 Dec. 2025
  • Often brought up is the worry about pigs having an endogenous retrovirus, which some people say could activate and infect human cells.
    — Jeremy Rehm, Discover Magazine, 19 June 2018
  • This stability seems endogenous rather than a mere reflection of federal aid.
    — Andrew Stuttaford, National Review, 21 Nov. 2021
  • But the research concerning endogenous testosterone, the kind that the body makes naturally, was less settled.
    — Louisa Thomas, The New Yorker, 17 Mar. 2022
  • Acupuncture and electroacupuncture both increase the body’s levels of compounds called endogenous opioids.
    — Joe Smith, The Conversation, 29 Apr. 2025
  • In fact, its molecular structure is identical to that of endogenous progesterone produced there.
    — Allison Aubrey, NPR, 11 Nov. 2025
  • Additionally, monkeys are thought to be immune to endogenous pig viruses.
    — Shi En Kim, Scientific American, 11 Oct. 2023
  • In the 1980s some economists worked to build endogenous-growth models that said where innovation came from.
    — The Economist, 18 Jan. 2020
  • Scientists were already on the lookout for porcine endogenous retroviruses, which are integrated into the pig genome.
    — Emily Mullin, WIRED, 26 Dec. 2022
  • Species with endogenous lentiviruses usually aren’t bedeviled by active lentiviruses, at least none that has been identified yet, Fregoso told me.
    — Katherine J. Wu, The Atlantic, 21 Sep. 2022
  • Endorphins, released during exercise, are one type of endogenous opioid.
    — Moises Velasquez-Manoff Robert Petkoff Emma Kehlbeck Zak Mouton, New York Times, 16 Feb. 2025
  • Scientists think that the endogenous opioid system evolved, in part, to push animals toward behaviors that aided the species’ survival.
    — Moises Velasquez-Manoff Robert Petkoff Emma Kehlbeck Zak Mouton, New York Times, 16 Feb. 2025
  • Inside, the fluid that is circulating is actually a one-to-one mixture of the animal’s endogenous blood and our perfusate.
    — Tanya Lewis, Scientific American, 10 Aug. 2022
  • Mainstream endogenous growth models link technological improvements with the pool of resources that are thrown at solving problems.
    — Quora, Forbes, 16 Feb. 2024
  • Under extreme stress, the fight-or-flight hormones aggressively trigger the endogenous opioid system, which greatly reduces the pain.
    — Dr. Sanjay Gupta, CNN Money, 26 Aug. 2025
  • Yet, not enough can be gained from dietary or endogenous sources to improve performance, which is why supplemental creatine may beneficial.
    — Amber Smith, Discover Magazine, 11 Oct. 2022
  • It’s derived from a fern from South America, and contains an endogenous photo protective factor.
    — Megan McIntyre, Allure, 26 Feb. 2025
  • In Feilding’s view, the mystical experience is an endogenous state of mind which happens on rare occasions, much more often to children.
    — Natan Ponieman, Forbes, 12 Oct. 2021
  • If KoRV follows the path of other endogenous retroviruses, that trend will continue.
    — Quanta Magazine, 4 Mar. 2015
  • People with depression show abnormalities in the body’s release of its own, endogenous, opioid chemicals.
    — Olga Khazan, The Atlantic, 15 May 2017
  • But endogenous opioids have an insider advantage as a natural part of the body’s interwoven system for pain modulation.
    — Dr. Sanjay Gupta, CNN Money, 26 Aug. 2025
  • Opioids, whether endogenous or those found in narcotics (called exogenous opioids), bind to opioid receptors located on the outer membrane of nerve cells in the brain, spinal cord, and other organs.
    — Dr. Sanjay Gupta, CNN Money, 26 Aug. 2025
  • The endogenous opioid family includes a diverse group of other chemicals besides just endorphins – and enkephalins are also noteworhty for their roles in pain suppression.
    — Ben Thomas, Discover Magazine, 19 Oct. 2015
  • It’s believed to work by activating endogenous TGF-beta 1, which is a protein that affects cell growth and division.
    — Allison Futterman, Discover Magazine, 4 Jan. 2024
  • And in lab experiments, these porcine endogenous retroviruses (PERVs) tended to leap from pig to human cells.
    — Jonathon Keats, Discover Magazine, 24 Jan. 2018
  • Instead, exercise triggers our bodies to release endocannabinoids, the endogenous cousin to cannabinoids, the stuff found in marijuana.
    — Frederick Dreier, Outside, 11 Feb. 2026
  • Following the discovery of endogenous creatine synthesis in the human brain, research quickly moved to understand what role this compound plays in things like cognition and mood.
    — Rich Haridy, New Atlas, 29 Jan. 2025
  • Micronized progesterone is a bioidentical hormone with a molecular structure identical to the endogenous progesterone produced in the ovaries.
    — Allison Aubrey, NPR, 11 Nov. 2025
  • Indeed, a quantum computer attack could impair nearly 60% of total assets in the banking system due to bank runs and endogenous liquidity traps.
    — Arthur Herman, Forbes, 26 May 2021
  • If so, that would strengthen the case for a subsurface ocean origin, as Enceladus’ vapor also contains some of the same salts found on the surface of Ganymede, and these salts are considered endogenous.
    — Elizabeth Rayne, Ars Technica, 14 Nov. 2023

Some of these examples are programmatically compiled from various online sources to illustrate current usage of the word 'endogenous.' 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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