Adeel Safdar was once a rising star in the field of kinesiology. After completing his doctorate degree at McMaster University in Canada, working with one of the titans of his field, Safdar took a postdoc at Harvard, then accepted a newly created chair position at another university in Ontario.
That all came crashing down last year, when Safdar went on trial in Canada, accused of horrifically abusing his wife. Over the course of the trial, allegations arose about his research, prompting two journals to flag papers he co-authored with his former mentor, Mark Tarnopolsky.
Tarnopolsky — author of more than 400 papers, which have collectively been cited more than 17,000 times, according to Clarivate Analytics’ Web of Science — told Retraction Watch:
The president of the Karolinska Institutet (KI) is frustrated.
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.
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 
In 2015, a group of researchers based in Spain decided to write a review article on high blood pressure. But when they looked over eight articles co-authored by the same person, they noticed some undeniable similarities. 
Does incorporating gardens and their harvest into school-based nutrition programs help children get healthier? A 2017 paper claims it does, but a group of outside experts disagrees — strongly.