This study demonstrates that adolescents with EDs are at an increased risk for suicidality, highlighting the need for close screening, particularly in those with BN, AN-BP and AN with a higher BMI.Key pointsAdolescents with eating disorders have higher rates of suicidality than the general population.Bulimia nervosa had the highest risk for a suicide attempt, suicide ideation and self-harm at diagnosis.A higher body mass index (BMI) percentage was associated with an increased risk of suicidality in the anorexia nervosa group.