The Most Common Genetic Diseases

3. Cystic Fibrosis

Cystic fibrosis targets the cells that produce mucus, causing mucus to accumulate inside various organs, such as the pancreas and lungs. Many people with cystic fibrosis have difficulty breathing due to a buildup of mucus in their airways. Other symptoms include an inability to gain weight, a persistent cough, frequent sinus infections, wheezing, and loose stools.

Cystic fibrosis is classified as a single-gene mutation. It develops as a result of a singular defective gene, which can be passed down through many generations.