In men, cystic fibrosis may affect the development of the vas deferens, which is the tube that carries sperm.
The tube can also become blocked with mucus. Sperm are still made, but they are
not released during ejaculation. This results in an inability to father
Although cystic fibrosis does not affect the development of the
reproductive organs in women, thick mucus makes fertilization of the egg
difficult. But most women who have this disease can become pregnant. Before a
woman who has been diagnosed with cystic fibrosis becomes pregnant, she should
discuss with her doctor the risks, what to expect, and other issues. Many women
who have cystic fibrosis have successful pregnancies, but they need close
monitoring because of their nutritional status and the extra strain on their
If you have cystic fibrosis and are thinking about getting pregnant,
be sure to talk openly with your doctor about it. You may also want to
consider genetic testing for you and your partner, to find out your chances of
having a child with cystic fibrosis.