Sharp BMI increases early in life could negatively influence cystic fibrosis children’s overall growth, according to a study in Pediatric Pulmonology.

The study included 57 infants diagnosed with CF, who were born between 1997 and 2001. In this group, 30 were boys, and most had severe CF. Results showed that before diagnosis, the infants’ height was already substantially lower than the general population of the same age.

In boys, a slight improvement in height was seen between the ages of 12.5 and 14 years. Still, their final height at 18 years old was on average 4 centimeters (about 1.6 inches) shorter than Dutch reference values.