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Obesity Facts

The European Journal of Obesity

Guidelines for Authors

Article Processing Fee
Types of Papers and Allotted Number of Pages
Conflicts of Interest
Ethical and Legal Prerequisites
Peer-Review Policy
Plagiarism Policy
Digital Object Identifier (DOI)
Supplementary Material
Self-Archiving, Funding Organizations (NIH, etc)
Edited Articles for Correction


'Obesity Facts' is a peer-reviewed scientific Journal that welcomes articles covering all aspects of obesity, in particular etiology and pathogenesis, epidemiology, comorbidity, psychological aspects, sociocultural aspects, treatment, and prevention. 'Obesity Facts' aims to provide scientific information to all clinicians and researchers interested in obesity. Authors with either a medical or non-medical background are encouraged to submit original articles, (short) reviews, case reports, and letters to the editor.

Manuscripts must be submitted online.

Names, postal and e-mail addresses of four experts in the appropriate area of research should accompany each manuscript. Selected scientists will be invited to act as referees. Referees suggested should not be from the same institution as the author and should have expert knowledge of the subject.

Should you have any problems with electronic submission please contact the Editorial Office:

Dr. Sven Riestenpatt
Editorial Office 'Obesity Facts'
S. Karger Verlag für Medizin und Naturwissenschaften GmbH
P.O. Box
79095 Freiburg (Germany)
Tel. +49 761 45 20 722
Fax +49 761 45 20 714

Article Processing Fee

An article processing fee (APF) is payable for articles accepted for publication in 'Obesity Facts'. The receipt of payment is required for the editing and publishing process to begin. If a manuscript is rejected, the article processing fee (APF) is waived.

The article processing fee for authors and institutions amounts to EUR 2,420.00 (incl. VAT). A reduction of the APF can be considered for authors from low-income countries. Please contact Mr Alexander Craig.

No APF will be due for Editorials and invited articles.

Download: Open Access Payment Form (PDF) [This form can be filled in electronically]


All contributions must be written in English (American or British spelling and grammar).

Types of Papers and Allotted Number of Pages

Please format the manuscript 1 1/2-spaced with 3-cm margins (left and right). Use only one format (normal) for the document.

1 published page equals about 4,400 characters.

The text should be limited to the following number of pages:

Published pages Equals approx. characters *
Review Article, Systematic Review, Research Article 10 42,000
Case Report 6 24,000
Letter to the Editor 2 6,000
Others 3 12,000

* including title page, summary, illustrations, tables, and references. Each table or figure counts for 1,500 characters

Articles exceeding the recommended lengths can be accepted on an exceptional basis only. We therefore ask the authors to adhere to the requirements stated above.


All articles in this journal are Open Access and meet the requirements of funding bodies or academic institutions. Articles are licensed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International license (CC BY-NC-ND). Articles can be read, downloaded, printed, and shared provided that use is for non-commercial purposes only, no modifications or adaptations are made, and proper credit is given to the authors as well as the original publisher. For research funded by the Wellcome Trust, Research Councils UK (RCUK) and other organizations with the same requirements, papers are published under the Creative Commons Attribution 4.0 International license (CC BY 4.0).

Please contact Karger's Open Access team at openaccess@karger.com with questions regarding your funding body or other matters.

Acceptance of a manuscript is based on the evaluation by several reviewers (peer review).

Manuscripts are received with the explicit understanding that the article has not been published, neither wholly nor in part, has not been submitted for publication anywhere else and is not under consideration by any other journal. Submission of an article for publication implies that the authors are the owners of the copyright and that the article does not infringe any existing third party rights, including copyright and intellectual property rights.

It is the authors' responsibility to obtain permission to produce illustrations, tables, etc. from other publications.

Once the manuscript is accepted for publication, the authors grant S. Karger Publishers a license to publish and reproduce the article in either its present form or revised version for any possible use and identify themselves as the original publishers. This right extends also to associated companies. The publishing rights are worldwide rights and are not time-limited. They include the right to publish the text in printed format as well as electronic online and offline media or databases of any kind. Accepted papers, in whole or in part, may not be translated into other languages, or reproduced by any mechanical or electronic means (including photocopying, recording and microcopying), or stored in a retrieval system without the written consent of the publisher.

Download: License Agreement (PDF)

The publisher reserves the right to edit the manuscript and decide on the layout.

Conflicts of Interest

Authors are required to disclose any sponsorship or funding arrangements relating to their research, and all authors must disclose any possible conflicts of interest. Disclosure statements will be published at the end of the text of the article.

Ethical and Legal Prerequisites

Manuscripts involving examinations of human subjects must include a statement that the trial protocol has been approved by an ethical committee and thus meets the standards of the Declaration of Helsinki in its revised version of 1975 and its amendments of 1983, 1989, and 1996 [JAMA 1997;277:925-926]. Accordingly, the subject's informed consent has to be mentioned in the manuscript. Information suitable to reveal the subject's identity is to be avoided.

Experiments involving animals demand consent as well and must meet the requirements of German laws for the protection of animals in their current version. A reference to this approval must be included in the manuscript. Articles from countries other than Germany must include a comparable note.

Peer-Review Policy

Obesity Facts is a peer-reviewed journal that uses a single-blind peer-review. Our aim is to provide authors with fast and constructive feedback regarding their submitted manuscript. The Editor-in-Chief and the international editorial board ensure a thorough and fair peer-review and the highest scientific publishing standards. Editors guide the peer-review process for papers in their areas of expertise. They select reviewers and make the decision whether to accept/reject or send a manuscript for revision after at least two review reports are received, and then a further decision to accept/reject or request further revisions following author revisions. Reviewers must have a recent publication record in the area of the submission, must not have published with the authors in the previous three years, and must not be from the same institution as the authors. The Editor-in-Chief is responsible to maintain high-quality peer-review of papers submitted to the journal.

Plagiarism Policy

Whether intentional or not, plagiarism is a serious violation. We define plagiarism as a case in which a paper reproduces another work with at least 25% similarity and without citation.
If evidence of plagiarism is found before/after acceptance or after publication of the paper, the author will be offered a chance for rebuttal. If the arguments are not found to be satisfactory, the manuscript will be retracted and the author sanctioned from publishing papers for a period to be determined by the responsible Editor(s).


Authors' affiliations and address of correspondence: Each author's full name, followed by their affiliation (hospital, institute etc. where the work was conducted) and the exact postal address of the corresponding author complete with postal code must be given in a separate document to ensure a blind review process. Please also supply phone and fax numbers, as well as e-mail address.

Title page: The first page of each paper should indicate the title and a short title for use as running head.

Keywords: For indexing purposes, a list of 3-5 keywords in English is essential. Whenever possible, use keywords such as found in the Medical Subject Headings List (MeSH) of Index Medicus (see www.nlm.nih.gov).

Summary: Summaries must not exceed 200 words. Summaries of Original Articles and Case Reports should be structured as follows: Objective, Method, Results, Conclusion.
Summaries of Case Reports should be structured as follows: Background, Case Report, Conclusion.

Footnotes: Footnotes should be used only for tables.

Registered Trade Names: When first mentioned, registered trade names must be marked with the superscript registration symbol ® or ™. It is the sole responsibility of the author to ensure that this rule is followed properly.

Tables and Illustrations: Tables are part of the text and should be placed at the end of the text file. Illustration data must be stored as separate files. The number of figures and tables should be limited and aim to illustrate the text. Figures are listed in the text as (fig. 1), tables as (table 1). Data already mentioned in the text need not be repeated in a table. Accordingly, numbers used in tables need not be repeated in the text.

Illustrations must have a final resolution of 300 dpi after scaling, line drawings one of 600–800 dpi.


The list of references should include only the publications cited in the text.

References must be numbered sequentially in the order cited in the text. In the text identify references by Arabic numerals [in square brackets].

In each reference all authors should be named; the abbreviation 'et al.' is to be avoided.

It is recommended to quote only articles already published or accepted for publication. Please avoid 'in preparation' or 'personal communication'.

Authors are responsible for the accuracy and completeness of their references and for correct citation.

Journal titles should be abbreviated according to the Index Medicus system (www.nlm.nih.gov). ). If a reference manager is used, the style "Pharmacology" or "Nephron" should be chosen.

Examples for references:

Papers published in periodicals:
Wick, Küker W: Brain edema in neurooncology: radiological assessment and management. Onkologie 2004;27:261–266.

Papers published only with DOI numbers:
Theoharides TC, Boucher W, Spear K: Serum interleukin-6 reflects disease severity and osteoporosis in mastocytosis patients. Int Arch Allergy Immunol DOI: 10.1159/000063858.

Papers published in electronic format:
Black CA: Delayed type hypersensitivity: Current theories with a historic perspective. Dermatol Online J 1999;5:7. http://dermatology.dclib.org/DOJvol5num1.

Edited books:
Itskovitz-Eldor J, Amit M: Human embryonic stem cells; in Blazer S, Zimmer EZ (eds): The Embryo: Scientific Discovery and Medical Ethics. Basel, Karger, 2005, pp 74–90.

Büchler MW, Uhl W, Malfertheiner P, Sarr MG: Diseases of the Pancreas. Basel, Karger, 2004.

Digital Object Identifier (DOI)

A DOI number will be available as a unique identifier on the title page of each article. DOIs are useful for identifying and citing articles published online without volume or issue information (for more information, see www.doi.org).

Supplementary Material

Multimedia files and other supplementary files, directly relevant but not essential to the conclusions of a paper, enhance the online version of a publication and increase its visibility on the web. These files will undergo editorial review. The Editors reserve the right to limit the scope and length of the supplementary material. Multimedia and supplementary material should meet production quality standards for publication without the need for any modification or editing. Files should not exceed 10 MB in size. Figures and tables need to have titles and legends, and all files should be supplied separately and labeled clearly. All supplementary material should be referred to in the main text. A DOI number will be assigned to supplementary material and it will be hosted online at https://karger.figshare.com under a CC BY license. Authors will be charged a processing fee of EUR 298.00 (incl. VAT) for supplementary material.


Karger permits authors of Open Access articles to post the final, published version of their articles in Open Access repositories or on other websites, in accordance with the relevant Creative Commons license. Re-posted Open Access articles must:

  • Follow the terms of the relevant Creative Commons license
  • Be linked to the final version on www.karger.com
  • Include the following statement:

‘The final, published version of this article is available at http://www.karger.com/?doi=[insert DOI number] (e.g. http://www.karger.com/?doi=10.1159/000365070).’
It is the author’s responsibility to fulfill these requirements.
Articles to be archived in PubMed Central for any reason, including funding requirements, must be submitted by Karger (see below):

Funding Organizations (NIH, etc)

The U.S. National Institutes of Health (NIH) Public Access Policy mandates that accepted, peer-reviewed manuscripts are archived in its digital database, PubMed Central (PMC), within 12 months of the official publication date. As a service to authors, Karger submits the final, published version of Open Access NIH-funded articles to PubMed Central (PMC) immediately upon publication. The paper usually receives a PMCID within approximately a month. Karger also complies with other funders’ requirements (including Wellcome Trust and RCUK) for submission to PMC. Authors should include information on their grant in the Acknowledgements section of their papers.
Manuscripts to be archived in PMC due to funding requirements will be submitted by Karger on the author’s behalf.

Edited Articles for Correction

Unless indicated otherwise, edited articles are sent to the corresponding author and should be returned with the least possible delay. Changes made in the articles, other than the correction of editing errors, are charged to the author. No page proofs are supplied.


Order forms and a price list are sent with the edited articles. Orders submitted after the issue is printed are subject to considerably higher prices.