 No definitive cure for CF is known, but diverse medications are used, such as mucolytics, bronchodilators, steroids, and antibiotics, that have the purpose of loosening mucus, expanding airways, decreasing inflammation, and fighting lung infections, respectively.Cystic fibrosis is the most common life-limiting autosomal recessive disease among people of European heritage.In the United States, about 30,000 individuals have CF; most are diagnosed by six months of age.