risk factor

noun

: something that increases risk or susceptibility

Examples of risk factor in a Sentence

Age is one of the risk factors for this disease.
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.
Previous research suggests depression may be a risk factor for dementia, a prodromal symptom (an early sign of cognitive decline), or both. Emily Kay Votruba, EverydayHealth.com, 16 Dec. 2025 Hormonal conditions, like polycystic ovary syndrome (PCOS), can spur on some of these problems more swiftly in women; and research suggests women may be extra vulnerable to the consequences of smoking (another risk factor) on the heart. Erica Sloan, SELF, 15 Dec. 2025 Smoking is the leading risk factor for both lung cancer and chronic obstructive pulmonary disease (COPD). Helen Carefoot, Flow Space, 8 Dec. 2025 Hearing Loss Once viewed as a quality-of-life issue, untreated hearing loss is now recognized as a powerful and preventable dementia risk factor. Melissa Fleur Afshar, MSNBC Newsweek, 3 Dec. 2025 See All Example Sentences for risk factor

Word History

First Known Use

1907, in the meaning defined above

Time Traveler
The first known use of risk factor was in 1907

Browse Nearby Words

Cite this Entry

“Risk factor.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/risk%20factor. Accessed 20 Dec. 2025.

Kids Definition

risk factor

noun
: something that increases the possibility that something bad will happen
cigarette smoking is a risk factor for lung cancer

Medical Definition

risk factor

noun
: something that increases risk or susceptibility
poorly controlled hypertension is a risk factor for coronary heart disease

More from Merriam-Webster on risk factor

Last Updated: - Updated example sentences
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