Respondents were from 20 countries around the world: Australia, Bolivia, Brazil,
Canada, China, France, Germany, Great Britain,
India, Israel, Japan, Kenya, Mexico, the Philippines,
Saudi Arabia, South Africa, Spain, Sweden, Turkey
and the United States.
Original Question: Which, if any, of the following do you personally think increases a person’s risk of getting cancer? Please select all that apply.
Citation formats
Share of people worldwide who believed select risk factors caused cancer as of 2019
As of November 2019, around 63 percent of people aged 16 years and older worldwide believed that tobacco use increases a person's risk of getting cancer. This statistic illustrates the percentage of people worldwide who thought the following increase a person's risk of getting cancer as of 2019.
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Union for International Cancer Control. (January 26, 2020). Percentage of people worldwide who thought the following increase a person's risk of getting cancer as of 2019 [Graph]. In ÌÇÐÄÆÆ½â°æ. Retrieved July 31, 2026, from /statistics/1214114/perception-of-people-worldwide-regarding-cancer-risk-factors/
Union for International Cancer Control. "Percentage of people worldwide who thought the following increase a person's risk of getting cancer as of 2019." Chart. January 26, 2020. ÌÇÐÄÆÆ½â°æ. Accessed July 31, 2026. /statistics/1214114/perception-of-people-worldwide-regarding-cancer-risk-factors/
Union for International Cancer Control. (2020). Percentage of people worldwide who thought the following increase a person's risk of getting cancer as of 2019. ÌÇÐÄÆÆ½â°æ. ÌÇÐÄÆÆ½â°æ Inc.. Accessed: July 31, 2026. /statistics/1214114/perception-of-people-worldwide-regarding-cancer-risk-factors/
Union for International Cancer Control. "Percentage of People Worldwide Who Thought The following Increase a Person's Risk of Getting Cancer as of 2019." ÌÇÐÄÆÆ½â°æ, ÌÇÐÄÆÆ½â°æ Inc., 26 Jan 2020, /statistics/1214114/perception-of-people-worldwide-regarding-cancer-risk-factors/
Union for International Cancer Control, Percentage of people worldwide who thought the following increase a person's risk of getting cancer as of 2019 ÌÇÐÄÆÆ½â°æ, /statistics/1214114/perception-of-people-worldwide-regarding-cancer-risk-factors/ (last visited July 31, 2026)
Percentage of people worldwide who thought the following increase a person's risk of getting cancer as of 2019 [Graph], Union for International Cancer Control, January 26, 2020. [Online]. Available: /statistics/1214114/perception-of-people-worldwide-regarding-cancer-risk-factors/