Please read the information below and the Abstract Submission Guidelines before submitting an abstract.

• Abstracts must be submitted online via the website only.
  ABSTRACTS SUBMITTED BY EMAIL WILL NOT BE ACCEPTED.

• Before submitting, the presenting author must ensure that all co-authors are aware of, and agree to, the abstract details as well as the submission terms and conditions.

• Abstracts must be received by the announced deadline. Abstracts received after the deadline will not be considered.

• The Scientific Committee will determine whether the abstract will be accepted for presentation, with consideration given to the author’s preference.

• The acceptance of an abstract does not imply the provision of travel, accommodation, or registration for the Congress, nor any other costs associated with the preparation, presentation of the oral or ePoster, or any costs associated with attendance at the Congress.

• All abstracts are reviewed blindly by the IFSO reviewers. Their decision is final.

• Presenting authors must be registered participants. Only abstracts of authors who have paid their registration fees by the deadline indicated in the notification email will be able to present their study at the Congress and to make sure their abstract is included in the Abstract Book that will be published in Obesity Surgery.

• By submitting your abstract, you agree to have your abstract (if accepted) published on the Congress website, Congress app and in printed material.

• By submitting an abstract, you give permission to film or photograph your presentation at the Congress.

• The Abstract Submitter grants the Organizers a royalty-free, perpetual, irrevocable, nonexclusive license to use, reproduce, publish, translate, distribute, and display the content.

• Disclosure of Conflicts of Interest: If you have any commercial interests or associations that might pose a conflict of interest regarding the submission, they must be declared in the submission system. If accepted for presentation, the commercial interest or association must be declared on the title slide or the slide immediately following the title slide.

• You will immediately notify Kenes Group if you are unable to present or if the presenting author is changed.

• Use first-person language: Authors should not use “obese” as an adjective or noun to describe an individual person or group of people but instead use terms such as “people with obesity” and “populations with obesity”.
• Use “severe obesity” (or reference BMI range or Class), never “morbid obesity”, “super-obesity”, or “extreme obesity”, and all derivations (morbidly, super-obese, etc.).
• Do not use words such as: “success/failure”, “recidivism”, “non-compliant”, “gold-standard”, “last-resort”.
• Avoid the term “weight-loss surgery”; instead, use “bariatric-metabolic surgery”.
• Imagery: do not use headless people, stereotypical/stigma = takeaway boxes, fast food, ill-fitting clothes, etc.

• BMI 30 <35kg/m2 Obesity I
• BMI 35 <40kg/m2 Obesity II
• BMI 40 <50kg/m2 Obesity III
• BMI 50 <60kg/m2 Obesity IV instead of “Super Obesity”
• BMI 60 <70kg/m2 Obesity V instead of “Super-Super Obesity”

Before you begin, please read the Abstract Submission Important Information and then prepare the following information:

• ​Presenting author’s contact details:
  – Full first and family name(s)
  – Email address
  – Affiliation details: department, institution / hospital, city-state (if relevant), Country
  – Phone number
• Author and co-authors’ details
• Presentation Preference: Oral Presentation / ePoster / Video

 Abstract Content

All abstracts should be submitted and presented in clear English with accurate grammar and spelling of a quality suitable for publication. If you need help, please arrange for the review of your abstract by a colleague who is a native English speaker, by a university-specific publications office (or another similar facility), or by a copy editor prior to submission.

The author is responsible for the accuracy of the abstract.

• Abstract title – must be in UPPER CASE and limited to 20 words. Please submit symbols as words.
• Abstract text – limited to 350 words, including acknowledgments. (Please Note: word count is affected when graphs/tables are included). Abstracts must contain original scientific data collected by the author(s). Do not include references in your abstract body.
• Abstract topic – select the abstract topic per the list of topics.
• Tables – a maximum of 2 tables can be incorporated and placed anywhere in the abstract.
• Images – The abstract can incorporate a maximum of 2 images. Each image’s maximum file size is 500 KB, and the graph/image’s maximum pixel size is 600(w) x 800(h) pixels. You may upload images in JPG, GIF, or PNG format. Note that images don’t affect the word count.
• Abstract Format – Abstracts need to be structured under the following sub-headings. The abstract should not repeat the title, authors and affiliations

Background
Objectives
Methods
Results
Conclusion

• Video Submissions – The video should be prepared as follows:
  • Videos must be provided via a Vimeo Link.
  • For instructions, please click here.
  • Videos must include verbal narration in English.
  • Narration must use generic terms, and videos cannot contain any evidence of commercial support.
  • Acceptable video format: .mp4
  • Maximum length of the video: 7 minutes
  • Maximum size of the video: 100 MB
  • Videos must be uploaded in HD, in order to assure the best quality possible. The minimum dimensions accepted are 1280×720 (720p); 1920×1080 (1080p). We advise not to compress the file but leave it in the original format. Please do not exceed the maximum length of 60 FPS.
  • Videos should be in a standardized format:
    • Video title
    • Disclosure
    • Clinical presentation and indication for surgery
    • Preoperative x-ray images/endoscopy/blood results
    • Operative procedure
    • Postoperative outcome
    • Conclusions
  • Do not include the name(s) of the author(s) in the video to guarantee blinded review.
  • Ensure that the link is fully accessible and remains this way for at least 3 months after the IFSO World Congress (IFSO 2025) Meeting if accepted for presentation.

• Use only standard abbreviations. Special or unusual abbreviations should be placed in parentheses after the full word the first time they appear.
• Use generic names of drugs. If you have any commercial interests or associations that might pose a conflict of interest regarding the submission, they must be declared. If accepted for presentation, the commercial interest or association must be declared on the title slide or the slide immediately following the title slide.
• Submissions may not contain patient names, hospital ID numbers, or other identifying information.
• The submission form allows you to store your abstract as a draft until the deadline. If not submitted by the deadline, drafts will be deleted.
• Click the SUBMIT button at the end of the process to save your abstract. You may log in to the system later to make changes to your abstract up to the submission deadline. After the deadline, abstracts cannot be modified or corrected.
• After you submit your abstract, you will receive an abstract ID number via email. Please refer to this abstract number in all correspondence regarding the abstract.
• Please contact us if you have not received confirmation that your abstract has been submitted.
• Please do not submit multiple copies of the same abstract.

Anyone who has one or more Abstracts accepted need to submit their full paper(s) to Obesity Surgery, the official Journal of IFSO.

The manuscript will have to be submitted for publication following the guidelines of Obesity Surgery Journal.

There is no guarantee that the paper will be accepted for publication, as it will be peer reviewed as per the Journal standard process.

N.B.: In order to be evaluated as an IFSO abstract submission, please make sure to tick the appropriate box in the submission page on the Obesity Surgery platform.

Thank you very much for contributing to the growth of our Journal and of our Federation!