Content integrity - BMJ Group https://bmjgroup.com Helping doctors make better decisions Thu, 25 Sep 2025 11:22:20 +0000 en-GB hourly 1 https://bmjgroup.com/wp-content/uploads/2024/04/Favicon2_Orange.png Content integrity - BMJ Group https://bmjgroup.com 32 32 BMJ Group retracts trial on apple cider vinegar and weight loss https://bmjgroup.com/bmj-group-retracts-trial-on-apple-cider-vinegar-and-weight-loss/ Thu, 25 Sep 2025 08:26:58 +0000 https://bmjgroup.com/?p=13303

Journalists and others should no longer reference or use the study findings in future reporting

BMJ Group has retracted research suggesting that small daily quantities of apple cider vinegar might help people who are overweight or obese to lose weight.

The small clinical trial was published in the open access journal BMJ Nutrition, Prevention & Health in March 2024 and its findings press released. The study findings generated widespread international attention at the time, and continue to be frequently referred to in media coverage.

The retraction was prompted by concerns raised about the quality of the work, including the approach to statistical analysis of the data; implausible statistical values; the reliability of the raw data; inadequate reporting of methods; and lack of prospective trial registration, which breaches BMJ Group’s editorial policy.

Initially, concerns were raised in critiques of the study, some of which were published as letters in the journal. But after review by BMJ Group’s content integrity team, the study was referred to statistical experts to evaluate its reliability.  This included attempts to replicate the results and examine the authenticity of the underlying data supplied by the authors.

It wasn’t possible for the statisticians to replicate the results and multiple analytical errors were identified. There were also irregularities in the data set, and their report, which is appended to the retraction notice, concluded that the data collected from each participant would require further independent scrutiny.

The authors said that the identified errors were honest mistakes, but they agree with the decision to retract the study.

Dr Helen Macdonald, Publication Ethics and Content Integrity Editor at BMJ Group, said: “Tempting though it is to alert readers to an ostensibly simple and apparently helpful weight loss aid, at present the results of the study are unreliable, and journalists and others should no longer reference or use the results of this study in any future reporting.”

She added: “This retraction reflects our strategic and proactive approach to investigating concerns raised about the content we publish. We act where necessary in the interests of openness and the importance of correcting the scientific record.

“While we deal with allegations as swiftly as possible, it’s very important that due process is followed. Investigations are often complex. This one involved detailed scrutiny of data and correspondence with researchers, institutions, and other experts, for example. Reaching a sound and fair and final decision can therefore take several months.”

Commenting on the decision to publish the study despite the lack of trial registration, Professor Martin Kohlmeier, editor in chief of BMJ Nutrition Prevention & Health, explained: “In hindsight, this was the wrong decision to make. But the authors come from a scientific environment that is underrepresented in nutritional research and the journal aims to prioritise high quality evidence, which usually comes from clinical trials.

“These are relatively unusual in nutritional research as they can be challenging to undertake because of the numbers of participants and time needed to obtain meaningful results.”

Notes for editors:
Retracted research
Apple cider vinegar for weight management in Lebanese adolescents and young adults with overweight and obesity: a randomised, double-blind, placebo-controlled study doi:10.1136/bmjnph-2023-000823

BMJ Nutrition Prevention & Health is co-owned with NNEdPro Global Institute for Food, Nutrition and Health

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Opportunities and threats in academic media https://bmjgroup.com/opportunities-and-threats-in-academic-media/ Wed, 03 Sep 2025 07:21:41 +0000 https://bmjgroup.com/?p=12971

Balancing open access with financial sustainability echoes changes seen in media and creative industries adapting to free content models. Lessons from these industries, such as using personalisation, community engagement, and user driven innovation, can inform publishing strategies. More efficient submission systems and user centred design are needed to speed the journey from submission to acceptance and increase research impact. Preprint platforms, such as medRxiv, show the benefits of early feedback. Smaller publishers, with agile and personalised services, may also thrive.

As digital tools and data driven strategies become central, safeguarding quality and preventing manipulation is essential. Publishers must also align with global standards on equity, diversity, and inclusion to foster an inclusive environment for authors and readers. BMJ Group integrates patient perspectives to ensure research is relevant, ethical, and credible. Other key measures include rigorous peer review and transparent data sharing.

Sustainability is also vital. Publishers should reduce environmental impact and align with global climate goals. BMJ Group has reduced its print frequency and expanded online updates as part of a wider effort to reduce its footprint. Ethical publishing means combining content integrity with sustainable practice and a commitment to inclusivity.

The future of academic publishing belongs to those who can balance innovation with integrity. Adaptability will be essential to meet the challenges ahead.

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Exposing hidden influence in infant feeding advice https://bmjgroup.com/exposing-hidden-influence-in-infant-feeding-advice/ Fri, 18 Jul 2025 11:12:43 +0000 https://bmjgroup.com/?p=12345

BMJ Investigations is our dedicated unit of specialist reporters who expose practices that risk public health and undermine trust in healthcare. Through rigorous, evidence-led reporting, the unit shines a light on issues that matter to patients, clinicians and policymakers alike. Over the past decade, our investigative journalism has unearthed research fraud and misconduct, prompted improvements in the transparency of clinical research, led to changes in guidelines and clinical practice, and triggered parliamentary inquiries.

In January 2025, The BMJ revealed that Danone-funded midwives offered branded infant feeding advice inside Tesco stores. The investigation uncovered a commercial pilot with parallels to the “milk nurses” scandal of the 1970s, despite clear and longstanding guidance from WHO and Unicef, advising against direct or indirect contact between formula company representatives and new mothers.

Rebecca Coombes, head of BMJ Investigations, broke the story exclusively in The BMJ. The report examined breaches of the International Code of Marketing of Breast-Milk Substitutes, and included expert analysis on how the scheme blurred the line between healthcare and commercial promotion. It also included direct testimony from a midwife who resigned over ethical concerns, scrutiny of WHO code violations, and comment from infant nutrition experts, helping to reignite public debate around the marketing of breast-milk substitutes.

As a direct result of this BMJ Investigation:

  • Tesco terminated the pilot, and confirmed it no longer plans to roll out the service to other stores.
  • Scrutiny of renewed public and professional formula marketing practices has been renewed, with commentary from public health leaders
  • The need for breastfeeding and infant feeding advice to remain impartial and free from commercial influence, and aligned with NHS guidance was reaffirmed

Vicky Sibson, director of the charity the First Steps Nutrition Trust, which promotes healthy eating in children up to 5 years old, said that Tesco had done the right thing by ending the Danone funded service.  She added,  misleading marketing disrupted informed decision making about infant feeding, undermining “both breastfeeding and safe and appropriate formula feeding.”

Vicky+Sibson+2

“If Tesco wanted to continue to provide an infant feeding service, we would urge them to do so without funding or support from the formula  industry and using information that is aligned with NHS advice, evidence based, and free from any commercial influence.”                                     Vicky Sibson  
 Director of the charity the First Steps Nutrition Trust

Anyone looking for independent, evidence based breastfeeding support can contact the National Breastfeeding Helpline, which is provided by the Breastfeeding Network and the Association of Breastfeeding Mothers.

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Correcting the record to enhance patient care https://bmjgroup.com/correcting-the-record-to-enhance-patient-care/ Mon, 03 Feb 2025 16:02:20 +0000 https://bmjgroup.com/?p=10212

Retractions play a vital role in maintaining the integrity of academic publishing and ensuring research credibility. While they are often viewed negatively due to concerns about reputational damage and career impact, BMJ Group sees them as crucial to scientific progress—reinforcing trust, refining evidence, and ultimately improving patient care.

A recent example is The BMJ‘s retraction and replacement of an article on unexpected weight loss as a potential cancer warning sign. After identifying a methodological error, Dr Brian Nicholson and his team at the University of Oxford worked closely with the journal to retract and publish the new version of the study,  Prioritising primary care patients with unexpected weight loss for cancer investigation: diagnostic accuracy study. This collaboration ensured that the research findings were accurately represented, reinforcing trust in the evidence used to guide clinical decision making.

The updated analysis revealed a striking shift in findings. Expanding the study population from 64,000 to over 326,000 patients, the 2023 update found that 4.8% of those with unexpected weight loss were diagnosed with cancer within six months—compared to just 1.4% in the original 2020 results. These revised findings led to critical changes in clinical recommendations, now advising urgent cancer referrals for all men aged 50+, women aged 60+, and younger patients with specific symptoms. They include an increase in recognised clinical features associated with cancer in men (from 10 to 20) and women (from 11 to 17), improving diagnostic accuracy.  Recognising the significance of their updated results, Nicholson and his colleagues proactively approached The BMJ

 

“We found the journal very responsive to our approach for advice about what we should do next.”

Brian D Nicholson
Academic Clinical Lecturer, Associate Professor, and General Practitioner, speaking to Retraction Watch, BMJ [Group], doing the right thing 

In March 2023, The BMJ published an expression of concern, followed by a retraction and new publication of the article in The BMJ in October. The journal informed the UK’s National Institute for Health and Care Excellence (NICE) about the retraction, as the study had the potential to shape recommendations on referring individuals with unexplained weight loss in primary care to specialist services.

Helen Beynon
Research Integrity Manager, and advisor to the Committee on Publication Ethics (COPE)

This case exemplifies The BMJ’s leadership in fostering trust, accountability, and the highest standards of research, setting a benchmark for evidence-based improvements in patient care. Through effective collaboration with authors, this approach has led to a shared success that ultimately serves the best interests of both patients and the public. 

Retractions at BMJ Group

At BMJ Group, retractions are considered by journal editors in cases of evidence of unreliable data or findings, plagiarism, duplicate publication, and unethical research. We may consider an expression of concern notice if an article is under investigation. All retraction notices explain why the article was retracted. The retraction procedure depends on the publication stage of the article:

Online First publication
A new article version containing just the metadata will be posted, with a retraction note replacing the original text. A retraction notice will also be published in the next available print issue. The original text will remain accessible.

Publication in an issue or a continuous publication journal
A replacement version of the article containing just the metadata will be posted, with a retraction note replacing the original text. The PDF will be replaced with a version watermarked with “Retracted”, but the original text will remain accessible. A retraction notice will also be published in the next available print issue.

In rare cases, we may have to remove the original content for legal reasons. In such cases, we will leave the metadata (title and authors) and replace the text with a note saying the article has been removed for legal reasons. A retraction notice will also be published online and/or in print.

Retraction notices are indexed and linked to the original records in Medline and Web of Science.

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Five things you should do as a journal editor to support social justice https://bmjgroup.com/five-things-you-should-do-as-a-journal-editor-to-support-social-justice/ Thu, 02 Jan 2025 12:06:57 +0000 https://bmjgroup.com/?p=9802

How you can take small steps to support social justice 

Today, the world of science is not fair. We know that there are underrepresented groups in both science and publishing w1,w2 and inequalities are contributing to real disparities within our scientific communities.

We believe it is time for all journal editors to take action. We all must put equality, diversity and inclusion (EDI) at the forefront of our agendas and encourage our colleagues to do the same. Only by leading from the top will you support others to also eradicate prejudice and discrimination. You can do this by making small but monumental changes, which will also help to protect the moral principles of your journal.

As one of the 30+ publisher signatories to the Joint Commitment for Action on Inclusion and Diversity in Publishing, BMJ Group continuously scrutinises our processes to minimise the apparent publishing biases – whilst recognising that there is so much more that we all need to do.

Where do journals and editors fit into the perpetuating cycle of social injustice?

Many of us might assume that there is little impact a journal editor can make on creating more diversity in research. When a manuscript has been submitted to a journal, the work has already been carried out.

Now is the time to move away from this line of thinking and instead consider the research-to-publication process as a cycle. What happens at the end of the cycle has as much impact on the start as it does on the outcome.

Take, for instance, the traditional “publish or perish” nature of STEM publishing: an individual’s publication rate is likely to affect their career progression w3 and studies have shown that there is a disproportionately higher rejection rate for authors from underrepresented groups.w2, w4,w5

This is largely attributed to unconscious bias in the decision making and peer review processesw6 – both areas in which are directly within the journals and editors sphere of influence.

By not stepping in from the start, as a journal editor, you are contributing to social injustice through inaction.

“I am reaching out because, we have continuously come back to your page on ‘Five things you should do as a journal editor to support social justice’ – particularly the graphic on the cycle of injustice. This visual
is quite impactful and will aid in our efforts for editors to understand how their journal strategies and decisions affect the broader research
ecosystem.””

Shaina Lange
Shaina Lange, Publishing Integrity Office Global Editorial Operations, Journals Publishing Group, American Chemical Society

Five quick wins

1. Add diversity to the agenda of your next editorial meeting

This is your opportunity to talk openly about structural racism and other biases inherent in publishing and your field and this will show your editorial team that EDI is an important objective of the journal. Use this time to ask your team the following:

  • In which processes and areas can your journal improve? What approaches can they suggest to make these improvements?
  • How can editorial team members improve their working awareness of unconscious bias?
  • What actionable steps can they take to consciously reduce the impact of bias on editorial decision making?

2. Diversify your commissioning

Lack of diversity of authorship is not something we can address overnight, but commissioning is one area where you as editors have the most direct influence.

  • Start by taking stock of your commissioning contact list and identify where it needs to diversify
  • Actively seek diversity when inviting editorials, commentary, blogs and podcast guests
  • Consider avoiding commissioning pieces with an all-male author line-up by inviting a mix of genders to take part
  • Review your instructions for authors and ensure you are appropriately encouraging diversity, for example, ask authors to consider involving co-authors from underrepresented groups

3. Diversify your editorial team and advisory board

The diversity of your editorial team has been shown to impact the diversity of both your peer review pool and authorship diversityw7.

You want to maintain a broad range of voices from ethnically and geographically diverse backgrounds.

To improve in this area, consider the following:

  • Review your recruitment sources, and how you word invitations to join and use networks
  • Ask board members to nominate colleagues from underrepresented backgrounds
  • Expand your numbers (if needed) to gain diversity
  • Consider having observers and/or associate members as a training opportunity. This is a good way to train new board members, creates earlier career research opportunities, and can gain more from those more experienced but with limited time

4. Diversify your peer reviewer pool

Finding peer reviewers can be a challenge in itself, but making the effort to diversify your peer reviewer pool can help with reviewer scarcity.

Another positive aspect of widening your pool is that it will actively showcase other aspects of diversity and inclusion initiative for your journal.

For instance, editorial boards with larger peer reviewer poolsw5 will illustrate their awareness of unconscious bias as they invite and select suitable reviewers.

  • Update your public-facing resources to encourage authors to recommend reviewers from under-represented backgrounds.
  • Review invitation wording to ensure it is always inclusive
  • Consider your sources for finding peer reviewers
  • Consider your policies on co-reviewing and reviewer mentorship and how they are credited, this can be a good way of helping new reviewers gain experience.

5. Appoint a lead for diversity and inclusion for your journal

Lastly, we strongly recommend appointing a lead on all matters related to diversity and inclusion. This is a quick and easy way to ensure the journal is progressing in its EDI goals. Such responsibilities can include (but are not limited to):

  • Review processes and working with the Editor in Chief (EIC) to set priorities
  • Develop strategies that will diversify authorship, peer review, editorial teams, and the advisory board
  • Monitor and increase diversity amongst author and peer reviewer groups
  • Raise awareness of unconscious bias amongst the editorial team, and drive initiatives that will keep these important areas at the top of the agenda

Helen Beynon, MA Oxon
Research Integrity Manager, and Advisor to the Committee on Publication Ethics (COPE)

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