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Examples of risk factor in a Sentence
Age is one of the risk factors for this disease.
Recent Examples on the Web
Long-term exposure to wildfires can also increase the risk of eventually getting lung cancer, similar to how second-hand smoke remains a risk factor for the development of lung cancer, according to a study published in The Lancet.
—Omer Awan, Forbes, 11 Jan. 2025
In a 2019 survey from the American Institute for Cancer Research, less than half of Americans identified alcohol as a risk factor for cancer.
—Nikki Crowley, The Conversation, 10 Jan. 2025
But additional research with more stringent control groups and better trial designs in recent years have questioned the potential heart benefits of alcohol, with the latest showing that even a daily drink can increase blood pressure, a risk factor for heart disease.
—Alice Park, TIME, 4 Jan. 2025
In fact, recent research estimates 40% of girls and young women aged 12 to 21 in the US are affected by iron deficiency, with menstruation listed as the primary risk factor.
—Caroline C. Boyle, USA TODAY, 19 Dec. 2024
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Word History
First Known Use
1949, in the meaning defined above
Dictionary Entries Near risk factor
Cite this Entry
“Risk factor.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/risk%20factor. Accessed 20 Jan. 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
Britannica English: Translation of risk factor for Arabic Speakers
Britannica.com: Encyclopedia article about risk factor
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