Juvenile idiopathic arthritis patients with low inflammatory activity have increased adiposity.

Objectives: The aim of this study was to assess the effect of juvenile idiopathic arthritis (JIA), its subtypes and disease activity on anthropometric measurements, body composition, and nutritional parameters.

Method: A cross-sectional cohort of 40 JIA patients, aged 3-10 years, was compared with 40 healthy children matched for age and gender. Concentrations of nutritional and inflammatory biomarkers in the blood, anthropometric measures, and clinical status were recorded and the parents filled in a 7-day food diary and completed the Childhood Health Assessment Questionnaire (CHAQ).