Cystic Fibrosis (CF) is an inherited condition that primarily affects breathing and digestion. There are many different gene mutations that cause cystic fibrosis, so each person with the condition will have different symptoms depending on their individual genetic makeup. Some people struggle with lung function and infections, while others need enzymes with every meal to help them digest their food. These symptoms are all caused by genes that control the movement of salt and water in to and out of cells, leading to sticky mucus build up in the lungs, digestive system and other organs. Many people with CF will develop CF-related diabetes in adolescence or adulthood.