Note: This article is part of our library of resources for Forms of Diabetes. What is Cystic Fibrosis? Cystic Fibrosis (CF) is a progressive genetic disease that causes a buildup of thick, excessive mucus in the lungs, pancreas, liver and kidney. The buildup of mucus in the lungs leads to chronic infections and difficulty breathing; … Continue reading What is Cystic Fibrosis-related Diabetes?