This guideline covers assessment, treatment, monitoring and inpatient care for children, young people and adults with eating disorders. It aims to improve the care people receive by detailing the most effective treatments for anorexia nervosa, binge eating disorder and bulimia nervosa. In December 2020, we highlighted the importance of rotating insulin injection sites within the same body region, in line with an MHRA Drug Safety Update on insulins (all types): risk of cutaneous amyloidosis at injection site to remind patients to do this to avoid skin reactions.