For a child with life is mostly a series of respitory infections doctors visits and medications. causes a build up of mucus in th lungs making breathing difficult . The thick mucus coats the hairlike projections lining air passage weakening the bodys immune system .Excess mucus interfers with the functioning of other oragns too.In the liver and pancreas mucus blocks the flow of the digestive enzymes in the intestine so food is not digested properly. Worn down by the repeated bouts of illness a patient rarely lives beyond his or her twenties ....