BMJ Group has withdrawn a study that once suggested drinking small amounts of apple cider vinegar each day could support weight loss in people who are overweight or obese. The clinical trial, published in March 2024 in the open-access journal BMJ Nutrition, Prevention & Health, was accompanied by a press release and quickly drew widespread international attention. BMJ Group’s content integrity team then conducted a review and referred the work to independent statistical experts. Their task was to test whether the results could be replicated and to verify the validity of the data submitted by the authors. The authors said that the identified errors were honest mistakes, but they agree with the decision to retract the study.