bioidentical

adjective

bio·​iden·​ti·​cal ˌbī-ō-ī-ˈden-ti-kəl How to pronounce bioidentical (audio)
: having the same molecular structure as a substance produced in the body
bioidentical estrogens

Examples of bioidentical in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
An earlier version of this story mistakenly described micronized progesterone as a bioidentical hormone with a molecular structure identical to the estrogen produced in the ovaries. Allison Aubrey, NPR, 11 Nov. 2025 Medically, bioidentical hormone therapy (HRT), for example with progesterone in the evening, can have a sleep-promoting effect for many women, especially if cycle irregularities, mood swings, or hot flushes occur in addition to sleep problems. Desireé Oostland, Vogue, 1 Nov. 2025 Common bioidentical hormones include testosterone, estrogen and progesterone. Helen Carefoot, Flow Space, 17 Oct. 2025 But scientific labs are the ideal places to create the sustainable bioidentical dupes of naturally occurring compounds that make our products safe and effective. Tressie McMillan Cottom, Mercury News, 29 Aug. 2025 Inner-refining treatments include bioidentical hormone replacement therapy, biological age testing, osteopathic manipulative techniques, nutrigenomic wellness testing, B12 injection, sound healing and a weight loss program. Elizabeth Marie Himchak, San Diego Union-Tribune, 30 July 2025 Services like bioidentical hormone replacement, regenerative therapies, IV drips and non-invasive aesthetic treatments went from being considered luxury indulgences to becoming part of people’s long-term health strategies. Devin Haman, Forbes.com, 12 June 2025 Virtue’s star ingredient is a bioidentical protein that mimics what your hair is actually made of. Neha Tandon, Glamour, 19 May 2025

Word History

First Known Use

1997, in the meaning defined above

Time Traveler
The first known use of bioidentical was in 1997

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Cite this Entry

“Bioidentical.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/bioidentical. Accessed 13 Nov. 2025.

Medical Definition

bioidentical

adjective
bio·​iden·​ti·​cal
ˌbī-ō-ī-ˈden-ti-kəl
: having the same molecular structure as a substance produced in the body
bioidentical hormones
bioidentical noun
Proponents of bioidenticals suggest that they are safer than other hormones because they mimic a woman's hormones. Roni Caryn Rabin, The New York Times
Last Updated: - Updated example sentences
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