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4 February 2026
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Four in ten cancer cases could be prevented globally

World Cancer Day 2026
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Up to four in ten cancer cases worldwide could be prevented, according to a new global analysis from the World Health Organization (WHO) and its International Agency for Research on Cancer (IARC). The study examines 30 preventable causes, including tobacco, alcohol, high body mass index, physical inactivity, air pollution, ultraviolet radiation and – for the first time – nine cancer-causing infections.
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Press Release

IARC Press Release 375

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