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No, a study has not shown that the covid jab causes cancer

Why a study from South Korea does not show that vaccines cause cancer

In Autumn 2025 a paper in South Korea was published that excited many a vaccine sceptic online. The paper claimed that receiving a vaccination against Covid19 was linked to a 27% increase in cancer risk.

However, when you dig into the data there is no evidence that the vaccine caused the cancer. We spoke to Professor Justin Fendos to explain why we cannot take this type of statistical analysis at face value.

Presenter: Tim Harford
Producer: Lizzy McNeill
Series Producer: Tom Colls
Editor: Richard Vadon
Production Coordinator: Brenda Brown
Sound Mix: James Beard

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9 minutes

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  • More or Less

    Tim Harford explains the numbers and statistics in the news and in life.