malnutrition causes more problems than coughing. In fact, it is speculated that cf moms deliver babies earlier because of the baby not getting enough nutrition. For this reason they are always on the lookout for IUGR (interuterine growth restraint). As my doctor said, our bodies have had 20 plus years to get used to the resp. restraints but the leech (baby) is something it's never had to deal with.