Retraction Watch

Tracking retractions as a window into the scientific process

Archive for the ‘nutrition’ Category

“Social science isn’t definitive like chemistry:” Embattled food researcher defends his work

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Brian Wansink

It’s been a busy few months for Brian Wansink, a prominent food researcher at Cornell University. A blog post he wrote in November prompted a huge backlash from readers who accused him of using problematic research methods to produce questionable data, and a group of researchers suggested four of his papers contained 150 inconsistencies. The scientist has since announced he’s asked a non-author to reanalyze the data — a researcher in his own lab. Meanwhile, criticisms continue to mount. We spoke with Wansink about the backlash, and how he hopes to answer his critics’ questions.

Retraction Watch: Why not engage someone outside your lab to revalidate the analysis of the four papers under question? 

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Written by Alison McCook

February 16th, 2017 at 10:15 am

Backlash prompts prominent nutrition researcher to reanalyze multiple papers

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Brian Wansink

To Brian Wansink of Cornell University, a blog post he wrote in November, 2016, was a meant as a lesson in productivity: A graduate student who was willing to embrace every research opportunity submitted five papers within six months of arriving to his lab, while a postdoc who declined two chances to analyze a data set left after one year with a small fraction of the grad student’s publications.

But two months and nearly 50 comments on the post later, Wansink — known for so much high-profile nutrition research he’s been dubbed the “Sherlock Holmes of food” — has announced he’s now reanalyzing the data in the papers, and will correct any issues that arise. In the meantime, he had to decline requests to share his raw data, citing its proprietary nature.

As Wansink writes in the second addendum to the November blog post, “The Grad Student Who Never Said ‘No’:”

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Written by Alison McCook

February 2nd, 2017 at 2:30 pm

JAMA article on zinc for the common cold retracted

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Authors have retracted a JAMA article summarizing the evidence behind the benefits of a supplement, after the systemic review upon which it was based was withdrawn.

The 2014 paper, “Oral Zinc for the Common Cold,” drew from a 2013 Cochrane Review, considered the gold standard for rigorous analyses of clinical treatments. That Cochrane review was withdrawn last year, a decision that the editors upheld this past September. Both were co-authored by Rashmi Ranjan Das, of the All India Institute of Medical Sciences, in Bhubaneswar, and Meenu Singh, of the Post-Graduate Institute of Medical Education and Research, in Chandigarh, India.

JAMA editor in chief Howard Bauchner told Retraction Watch that this week’s retraction followed an investigation by the journal: Read the rest of this entry »

Bone researcher with lifetime funding ban earns third retraction

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via WCH

A researcher who received a lifetime funding ban for misconduct from a Canadian agency has logged her third retraction, after a re-analysis of her work unveiled “serious inconsistencies.”

In July, the Canadian Institutes of Health Research (CIHR) released a report about Sophie Jamal, following an investigation by her former employer, The Women’s College Hospital in Toronto, Canada. The probe concluded that Jamal had manipulated data, which resulted in her being banned from CIHR funding for life, and the retraction of a study in The Journal of the American Medical Association.

After that retraction, researchers that made up the the Canadian Multicentre Osteoporosis Study Group (CaMos) decided to take a second look at Jamal’s work. In August, we reported on a retraction that came out of that examination, in the American Journal of Kidney Diseases (AJKD). At the time, a senior researcher from the group told us the group had also requested another journal retract a CaMos paper. 

Now, that other retraction has appeared. Here’s the retraction notice Osteoporosis International issued earlier this month: Read the rest of this entry »

Dear peer reviewer, you stole my paper: An author’s worst nightmare

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“Deeply disturbing,” “heinous intellectual theft,” erosion of the “public’s trust in medical research:” These are just a few words used to describe a rare type of plagiarism reported in this week’s Annals of Internal Medicine.

Although we’ve only documented a few cases where peer reviewers steal material from manuscripts and pass them off as their own, it does happen, and it’s a fear of many authors. What we’ve never seen is a plagiarized author publish a letter to the reviewer who stole his work. But after Michael Dansinger of Tufts Medical Center realized a paper he’d submitted to Annals of Internal Medicine that had been rejected was republished, and the journal recognized one of the reviewers among the list of co-authors, it published a letter from Dansinger to the reviewer, along with an editorial explaining what happened.

The letter and editorial identify the paper containing the stolen material — now retracted — but don’t name the reviewer responsible. Still, the articles are deeply personal. As Dansinger writes in “Dear Plagiarist: A Letter to a Peer Reviewer Who Stole and Published Our Manuscript as His Own,” the reviewer took much more than just a manuscript:

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Written by Alison McCook

December 12th, 2016 at 5:00 pm

Researchers retract paper after they run out of breast milk

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If you think something is amiss with your data, running an experiment again to figure out what’s going on is a good move. But it’s not always possible.

A team of researchers in Seoul recently found themselves in a bind when they needed to check their work, but were out of a key substance: breast milk.

The shortage led them to the retract their 2016 paper on a micronutrient found in breast milk that helps protect infants’ retinas. “Association between lutein intake and lutein concentrations in human milk samples from lactating mothers in South Korea,” was published online last spring in the European Journal of Clinical Nutrition. 

Here’s the retraction notice: 

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BMJ won’t retract controversial dietary guidelines article; issues lengthy correction

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bmjThe BMJ has released a detailed correction to a much-debated article critiquing the expert report underlying the U.S. dietary guidelines.

After the article was published in 2015, the Center for Science in the Public Interest (CSPI) organized a letter signed by more than 100 researchers, urging the publication to retract the article. Today, the journal said it found “no grounds” to do so.

However, in a press release accompanying the announcement of the correction, the BMJ notes that some aspects of the CSPI’s criticisms were merited.

Editor in chief Fiona Godlee said in a statement:

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Written by Alison McCook

December 2nd, 2016 at 12:08 pm

Retraction notice for GMO paper updated to include fraud

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fns2015012717103119Earlier this year, a nutrition journal retracted an article about the potential dangers of eating food containing genetically modified organisms (GMOs), noting the paper contained a duplicated image.

At the time, news outlets in Italy were reporting accusations that the last author, Federico Infascelli, an animal nutrition researcher at the University of Naples, had falsified some of his research.

Food and Nutrition Sciences has now updated its initial notice, saying the paper was pulled for data fabrication. In addition, Infascelli is no longer listed on its editorial board – he is included on an archived link to the editorial board from March 2016, but not on the current list of members.

Here is the updated version of the retraction notice for “Gamma-Glutamyl Transferase Activity in Kids Born from Goats Fed Genetically Modified Soybean:” Read the rest of this entry »

BMJ won’t retract controversial dietary guidelines article, says author

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bmjThe BMJ is not going to retract a 2015 article criticizing the expert report underlying the U.S. dietary guidelines, despite heavy backlash from readers, according to the author of the article.

As Politico reported today, the publication told journalist Nina Teicholz it wouldn’t retract the article, first published one year ago today.

Teicholz confirmed to us the journal emailed her in April to say the article would not be retracted: Read the rest of this entry »

Written by Alison McCook

September 23rd, 2016 at 2:41 pm

Nutrition researcher Chandra, who lost libel suit, charged with health care fraud

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R K Chandra

R K Chandra

A nutrition researcher with multiple retractions who unsuccessfully sued the Canadian Broadcasting Corporation (CBC) for libel has been charged with defrauding a state health insurance plan.

The Toronto Star reports that a warrant has been issued for the arrest of Ranjit Kumar Chandra for billing the Ontario Health Insurance Plan for “services that were either not provided or billed inappropriately.” The charges do not appear to be related to his research: Chandra worked once a week as an allergist for the past four years, the Star reports, and the alleged fraud was at least $5,000. Read the rest of this entry »

Written by Ivan Oransky

August 25th, 2016 at 9:30 am