Yes, it is possible to have cystic fibrosis and not know. Cystic fibrosis (CF) is a genetic disease that affects the lungs and digestive system of those with the condition. CF is caused by a mutation in a gene that controls the movement of salt and water in and out of cells. Unfortunately, because this mutation is recessive, meaning both parents must be carriers of the gene to pass it on to their children, many people do not know that they have the disease until they develop symptoms or are diagnosed through genetic testing.
Symptoms of CF can vary greatly from person to person, and some may not be noticeable until later in life. Common symptoms include frequent chest and sinus infections, difficulty breathing, coughing up mucus, salty-tasting skin, poor growth, and greasy, bulky stools. When they are present, CF symptoms can range from mild to severe, so it is possible for someone to have the condition and not be aware of it.
A diagnosis of CF can be made through genetic testing, which looks for the specific mutation associated with the disease. If the test results are positive, the individual is likely to have the condition, even if they have not yet experienced any symptoms. If the results are negative, it is possible that the individual is still a carrier of the gene and could pass it on to their children, although this is not always the case.
In conclusion, it is possible to have cystic fibrosis and not know. However, if a person is at a higher risk of having the condition, it is important to discuss genetic testing with a doctor to determine their status.