Longitudinal trends in nutritional status and the relation between lung function and BMI in cystic fibrosis: a population-based cohort study.

Background: A high-calorie diet has been a standard of care in cystic fibrosis (CF) for >3 decades. However, energy requirements may have changed with new treatments and milder genotypes.

Objectives: The objectives of this study were to describe longitudinal trends in nutritional status and to evaluate the relation between nutritional status and lung function.