Adult Cystic Fibrosis

Body Mass Index of Adult Cystic Fibrosis Patients

Pulmonary and nutritional outcomes in CF are closely linked and a key focus of the Adult CF Program at Cleveland Clinic. The CF Foundation has stated the following pulmonary and nutritional goals for adults: FEV₁ % predicted ≥ 75 and body mass index ≥ 22 for females and ≥ 23 for males.¹

Median FEV₁ Percent Predicted vs Median BMI Among Pretransplant Adult Cystic Fibrosis Patients (N = 82)


BMI = body mass index, FEV₁= forced expiratory volume in 1 second

Source: Cystic Fibrosis Foundation Patient Registry. 2021 Annual Data Report.

Cleveland Clinic’s Adult CF Program exceeds both pulmonary and nutritional national goals.


  1. Cystic Fibrosis Foundation Patient Registry. 2020 Annual Data Report. Bethesda, MD. ©2021 Cystic Fibrosis Foundation. Available at: