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 = 105)


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

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

Source: Cystic Fibrosis Foundation Patient Registry. 2022 Annual Data Report.

  1. Cystic Fibrosis Foundation Patient Registry. 2021 Annual Data Report. Bethesda, MD. ©2022 Cystic Fibrosis Foundation. Available at: