IJ

International Journal of Obesity

International Journal of Obesity publishes research and reviews on biochemical, physiological, genetic, molecular, metabolic, nutritional, psychological and epidemiological aspects of obesity and related disorders.

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Subject Endocrinology & Metabolism, Nutrition & Dietetics
Impact Factor 3.8
Quartile Q2
Open Access Type Hybrid
ISSN 0307-0565
eISSN 1476-5497
Invitation Only No
Cost Range £3290.00/$4990.00/€3990.00 APC for open access; no APC under the traditional publishing model.

Submission Instructions

International Journal of Obesity accepts the following article types. Click on an article type to view submission instructions.

Article

Cover Letter Cover letter is required. Cover letter must provide the corresponding author's affiliation and contact information, briefly explain the importance of the work and its suitability for the journal's readership, and confirm originality and exclusive submission.
Abstract A structured abstract is required. Abstract must not exceed 300 words. Abstract must be structured.
Manuscript Main text must not exceed 4,000 words excluding the abstract, tables/figures, and references. Methods section must provide enough detail for experimental procedures to be reproduced and include references. Manuscript must include an Author Contributions statement and document any use of a large language model in the Methods section or a suitable alternative section if no Methods section is available.
References References are limited to a maximum of 60. References must follow Vancouver format. References must be numbered in order of citation and listed in double-spaced numerical order at the end of the paper, with all authors listed for up to six authors and the first six followed by et al. for more than six authors.
Figures & Tables A maximum of 6 tables or figures is allowed, and a composite figure with more than three individual figures counts as two figures. Figures must not be embedded in the text and must be uploaded as separate files, and each table must be uploaded separately. Figure legends must appear on a separate manuscript page after the references, and tables must be editable.
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Review Article

Cover Letter Cover letter is required. Cover letter must provide the corresponding author's affiliation and contact information, briefly explain the importance of the work and its suitability for the journal's readership, and confirm that the material is original research.
Abstract An abstract is required. Abstract must be unstructured and must not exceed 300 words. Abstract must be unstructured.
Manuscript Main text must not exceed 6,000 words, excluding the abstract, tables or figures, and references. Review article must include a Methods section with search criteria and selection criteria and must report the total number of articles identified and selected for inclusion. Use of a large language model must be documented in the Methods section or another suitable part of the manuscript, and an Author Contributions statement is required.
References References must not exceed 120. References must follow Vancouver format. In-text citations must be numbered consecutively from 1 and the reference list must be arranged in numerical order of citation, listing all authors for up to six authors and the first six followed by et al. for more than six.
Figures & Tables Review article may include a maximum of 8 tables or figures, and a composite figure containing more than three individual figures counts as two figures. Figures must be uploaded as separate files rather than embedded in the text, and each table must be uploaded as a separate file. Figure legends must be provided on a separate manuscript page after the references and tables must be editable.
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Systematic Review Article

Cover Letter Cover letter is required. Cover letter must provide the corresponding author's affiliation and contact information, briefly explain the importance of the work and its suitability for the journal's readership, and confirm originality.
Abstract A structured abstract is required. Abstract must not exceed 300 words. Abstract must be structured.
Manuscript Main text must not exceed 6,000 words excluding the abstract, tables/figures, and references. Author Contributions statements are required, competing interests must be noted on the title page, and any use of a large language model must be documented in the Methods section or a suitable alternative section if no Methods section is available.
References References must not exceed 120. References must follow Vancouver format. References must be numbered in order of citation, listed in numerical order at the end, list all authors when there are up to six and the first six followed by et al. when there are more than six, and include first and last page numbers.
Figures & Tables A maximum of 8 tables or figures is permitted, and a composite figure containing more than three individual figures counts as two figures. Figures must not be embedded in the text and must be uploaded as separate files, and each table must be uploaded separately. Figure legends must be provided on a separate page after the references, and tables must be editable.
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Meta-Analysis

Cover Letter Cover letter is required. Cover letter must include the corresponding author's affiliation and contact information, briefly explain the importance of the work and its suitability for the journal's diverse readership, and confirm that the material is original research.
Abstract A structured abstract is required. Abstract must not exceed 300 words. Abstract must be structured.
Manuscript Main text must not exceed 6,000 words, excluding the abstract, tables/figures, and references. Methods section must provide enough detail for procedures to be reproduced and include references. Author Contributions statements are required, competing interests must be noted on the title page and in the submission, and use of a large language model must be documented in the Methods section or another suitable manuscript section if no Methods section is available.
References References must not exceed 120. References must follow Vancouver format. References must be numbered in order of citation, listed in double-spaced numerical order at the end, list all authors for up to six authors and the first six followed by et al. for more than six authors, and include first and last page numbers.
Figures & Tables A maximum of 8 tables or figures is allowed, and a composite figure containing more than three individual figures counts as two figures. Figures must not be embedded in the text and must be uploaded as separate files, and each table must be uploaded separately. Figure legends must be brief and specific and placed on a separate manuscript page after the references, and tables must be editable.
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Original Research Papers

Cover Letter Cover letter is required and must include the corresponding author's affiliation and contact information. Cover letter must briefly explain the importance of the work, why it suits the journal's diverse readership, and confirm that the submission is original research.
Abstract Abstract requirements are not specified.
Manuscript Methods section must provide enough detail for experimental procedures to be reproduced and include references, without repeating methods published in detail elsewhere. Manuscript must include an Author Contributions statement, a competing interests statement on the title page, and documentation of any large language model use in the Methods section or a suitable alternative section.
References References must follow Vancouver format. References must be numbered in order of citation, listed in numerical order at the end, list all authors up to six and the first six followed by et al. when there are more than six.
Figures & Tables Figures must not be embedded in the text and must be uploaded as separate files, and each table must be uploaded separately. Figure legends must be placed on a separate manuscript page after the references, and tables must be editable and labelled sequentially.
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Clinical Trials

Cover Letter Cover letter is required. Cover letter must provide the corresponding author's affiliation and contact information, briefly explain the importance of the work and its suitability for the journal's readership, and confirm that the submission is original research.
Abstract Abstract requirements are not specified.
Manuscript Clinical trial manuscripts describing new therapies must include an appropriate control group and be of sufficiently long duration to generate clinically relevant results, with diet, lifestyle, or nutraceutical trials usually lasting at least 1 year and surgical studies usually lasting at least 1 year. Manuscript must include the trial registry number, an Author Contributions statement, competing interests information, and documentation of any large language model use in the Methods section or another suitable section if no Methods section is available.
References References must follow Vancouver format. References must be numbered in order of citation, listed at the end in numerical order, include all authors if there are up to six or the first six followed by et al. if there are more than six, and provide first and last page numbers.
Figures & Tables Figures must be uploaded as separate files rather than embedded in the text, and each table must be uploaded as a separate file. Tables must be editable and labelled sequentially, and figure legends must be brief, specific, and placed on a separate manuscript page after the References section.
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Correspondence

Cover Letter Cover letter is required. Cover letter must provide the corresponding author's affiliation and contact information and briefly explain the importance of the work and its suitability for the journal's readership.
Abstract Abstract is not required for Correspondence submissions.
Manuscript Main text must not exceed 500 words, excluding tables, figures, and references. Correspondence must reference the original source, and any use of a large language model must be documented in the manuscript in a suitable section because a Methods section may not be available.
References Correspondence submissions may include a maximum of 10 references. References must follow Vancouver format. In-text citations must be numbered in order of appearance and the reference list must be presented in numerical order, listing up to six authors in full and using et al. after the first six when there are more than six authors.
Figures & Tables Correspondence submissions may include a maximum of 2 tables or figures, and a composite figure with more than three individual figures counts as two figures. Figures must not be embedded in the text and must be uploaded as separate files, while each table must be uploaded separately. Figure legends must be brief and placed on a separate manuscript page after the references, and tables must be editable and clearly labelled sequentially.
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Brief Communication

Cover Letter Cover letter is required. Cover letter must provide the corresponding author's affiliation and contact information, explain the importance of the work and its relevance to the journal's readership, and confirm that the submission is original research.
Abstract Abstract is required. Abstract must be no more than 200 words. Abstract must be unstructured.
Manuscript Main text must not exceed 1,500 words, excluding tables, figures, and references. Author Contributions statements are required, and any use of a large language model must be documented in the Methods section or another suitable section if no Methods section is available.
References Reference list may include a maximum of 20 references. References must follow Vancouver format. References must be numbered in order of citation and listed in numerical order at the end, with all authors listed for up to six authors and the first six followed by et al. for more than six authors.
Figures & Tables Submission may include a maximum of 2 tables or figures, and a composite figure with more than three individual figures counts as two figures. Figures must be uploaded as separate files rather than embedded in the text, and each table must be uploaded separately. Figure legends must be brief and placed on a separate manuscript page after the references, and tables must be editable.
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Recent Publications

Disrupted daily rhythms in light exposure and wrist temperature are associated with metabolic risk markers and obesity

Ivan Dozzani, María Rodríguez-Martín, Hassan S. Dashti, Céline Vetter, Jesualdo T. Fernández-Breis, J. C. Florez, Richa Saxena, Frank A. J. L. Scheer, Marta Garaulet

10.1038/s41366-026-02225-w
View Publication

Abstracts from the 11th UK Congress on Obesity (UKCO)

Jordan D. Beaumont

10.1038/s41366-026-02216-x
View Publication

Eating speed in complementary fed infants: associations with energy intake, weight status, breastfeeding, baby food pouch use and baby-led weaning

Alice M. Cox, Anne-Louise M. Heath, Jillian J. Haszard, Cathryn A. Conlon, Kathryn L. Beck, Pamela R. von Hurst, Lisa A. Te Morenga, Lisa Daniels, Emily A. Jones, Ioanna Katiforis, Kimberley J. Brown, Madeleine Rowan, Maria Casale, Neve H. McLean, Bailey R. Bruckner, Rosario M. Jupiterwala, Rachael W. Taylor

10.1038/s41366-026-02234-9
View Publication

Bariatric surgery and risk of dementia and Parkinson’s disease in patients with obesity

Suhail I. Shiekh, Dimitris Papamargaritis, Jonathan Goldney, Gema Hernandes, Melanie J. Davies, Kamlesh Khunti, Thomas Yates, Francesco Zaccardi

10.1038/s41366-026-02222-z
View Publication

Are associations of childhood body mass index trajectories with early-onset coronary heart disease modified by parental history of cardiovascular disease?

Julie Aarestrup, Elisabeth W. Andersen, Gilad Twig, Rikke K. Jacobsen, William Johnson, Lise G. Bjerregaard, Jennifer L. Baker

10.1038/s41366-026-02239-4
View Publication

Frequently asked questions

How long does it take to publish?

Submission to first editorial decision (median days): 9; Submission to acceptance (median days): 166

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Is a cover letter required?

A cover letter is required. It should include the corresponding author's affiliation and contact information, explain the importance of the work and its suitability for the journal readership, confirm originality and exclusive submission, and include previous reviewer comments if the manuscript was previously considered by another journal.

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What are the publication costs?

Research Topics

Obesity, Physical Activity, Diet Adipokines, Inflammation, and Metabolic Diseases Regulation of Appetite and Obesity Adipose Tissue and Metabolism Diabetes, Cardiovascular Risks, and Lipoproteins Bariatric Surgery and Outcomes Diet and metabolism studies Birth, Development, and Health Obesity and Health Practices Eating Disorders and Behaviors Body Composition Measurement Techniques Nutrition and Health in Aging Nutritional Studies and Diet Cardiovascular Disease and Adiposity Gestational Diabetes Research and Management Physical Activity and Health Pharmacology and Obesity Treatment Biochemical Analysis and Sensing Techniques Genetic Associations and Epidemiology Dietary Effects on Health Muscle metabolism and nutrition Cardiovascular Function and Risk Factors Diabetes Treatment and Management Cardiovascular and exercise physiology Children's Physical and Motor Development

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