The purpose of this review is to identify and appraise current international clinical guidelines on the management of obesity in adults that could be used to support the development of a National Clinical Guideline (NCG) on the management of obesity in adults in Ireland.

Obesity is a chronic complex disease characterised by having excess body fat (adipose tissue) that presents a risk to health. Globally, the prevalence of obesity has increased over the last 30 years and has doubled in Ireland during this period. As of 2019, approximately 23% of adults in Ireland were classified as obese based on body mass index, with an additional 37% of adults classified as overweight. In order to support the development of an Irish National Clinical Guideline on the management of obesity, the CICER Clinical Guideline Support team has been tasked with conducting a review to identify and appraise current international clinical guidelines on the management of obesity in adults. 

This protocol sets out the steps planned for this review, including search strategies, screening, data extraction, quality appraisal, and synthesis.