Overuse of CT scans could cause 100,000 extra cancers in US. The high number of CT (computed tomography) scans carried out in the United States in 2023 could cause 5 per cent of all cancers in the country, equal to the number of cancers caused by alcohol.

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3. Overuse of CT scans could cause 100,000 extra cancers in US. The high number of CT (computed tomography) scans carried out in the United States in 2023 could cause 5 per cent of all cancers in the country, equal to the number of cancers caused by alcohol.