Obesity Reviews is the official reviews journal of the World Obesity Federation, which links over 50 regional and national associations with over 10,000 professional members. A special discounted subscription rate is available to individuals who are members of any of the national or regional associations which are members of World Obesity (WO). Please visit the 'World Obesity Journals' page to view the discounted rates and subscribe. Obesity Reviews is a monthly journal publishing reviews on all disciplines related to obesity and its comorbidities. This includes basic and behavioral sciences, clinical treatment and outcomes, epidemiology, prevention and public health. The journal should, therefore, appeal to all professionals with an interest in obesity and its comorbidities. Review types may include systematic narrative reviews, quantitative meta-analyses and narrative reviews but all must offer new insights, critical or novel perspectives that will enhance the state of knowledge in the field. Prevalence studies that compare (review) trends across countries or regions or across ethnic groups or relevant subpopulations and provide novel insights and/or conclusions will be considered. The journal also invites short reviews presenting original or challenging theories, hypotheses or alternative interpretations of findings. Case reports presenting important and novel information and Letters to the Editor are also welcome. The journal will contribute to education and inter-professional developments by planning pro and con reviews on current controversies. Obesity Reviews is the highest ranked obesity journal by Impact Factor (ISI Journal Citation Reports).