Introduction Cystic fibrosis is caused by a defect in the CFTR gene. This gene makes proteins that control movement of salt and water in and out of your body’s cells. This causes thick mucus and salty sweat. A defect in the CFTR gene can also affect the body in different ways. CFTR stands for cystic fibrosis transmembrane conductance regulator. This protein is a channel for a movement across the membrane of cells that produce mucus, sweat, saliva, tears, and digestive enzymes. That balances the salt and water on epithelial surfaces, such as the pancreas or lungs. If you have CF, your mucus becomes thick and sticky. It builds up in your lungs and blocks your airways. The …show more content…
This can cause signs and symptoms such as: A persistent cough that produces thick mucus (sputum), wheezing, breathlessness, exercise intolerance, repeated lung infections, and inflamed nasal passages or a stuffy nose (Mayo Clinic Staff Print). Digestive enzymes that are in tubes in your pancreas, can be blocked by mucus. That makes it to where the digestive enzymes aren’t able to absorb the nutrients you need in the food you eat. This leads to foul odor, poor weight gain, intestinal blockage, and severe constipation. Among this, there are many other complications that could happen in the respiratory system, digestive system, and in the reproductive