Can people with CF have children?
Fertility, or the ability to have children, is usually normal or only slightly reduced in women but most men with CF are infertile. This is due to an abnormality/absence of the vas deferens (the tube which carries sperm from the testis to the penis). The tubes are effectively blocked or absent altogether. Although sperm is are produced and sexual function remains entirely normal, men with CF can seldom father children naturally. However, recent advances in in vitro fertilization and aspiration of sperm has allowed some men with CF to father children with clinical assistance.