Six months ago, the media was ablaze with the findings of a new paper, showing that nearly six percent of cancer cases are caused, at least in part, by obesity and diabetes. But this week, the journal retracted that paper — and replaced it with a revised version.
The new paper doesn’t change the main findings much — the share of all cancers attributable to diabetes and obesity changed from 5.6% to 5.7%, which wouldn’t change any headlines about the original paper. But soon after the paper was published, a group of researchers noticed the authors’ mistake — which was significant enough to prompt the journal to retract the paper entirely, and swap it with a new one.
According to first author Jonathan Pearson-Stuttard at Imperial College London:
A leading orthodontics journal has retracted 12 papers after determining that they contained either reused images, questionable data or both. Several of the articles involved experiments conducted in dogs — and one person familiar with the case told us that the duplication was an attempt to avoid sacrificing more animals than necessary for the research. 
Even when a paper is obviously flawed, it 
An author who has published four articles about the alleged risks of vaccines — but who lied about his name and claimed an affiliation with the Karolinska Institutet — has lost one of the papers. He will also lose three more, Retraction Watch has learned.
