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In June 2019, a paper by prominent US academics found that people who used e-cigarettes were at greater risk of a heart attack. The authors concluded that e-cigarettes were just as risky as tobacco in provoking heart attacks, and that using e-cigarettes and traditional cigarettes at the same time was even riskier. Unsurprisingly, this caused a stir in the media – in the form of 35 news stories, to be exact. Also unsurprisingly, it provoked vigorous scientific debate. Eight months later, the paper was retracted. When a paper is retracted it means we can’t trust its results. [...]