Marfan syndrome Marfan syndrome is a birth defect that affects the body's connective tissue. Learn the signs and symptoms of Marfan syndrome and how it's treated.
Pregnancy after age 35 If you get pregnant after 35, you may need prenatal tests to check for birth defects. Learn about pregnancy after 35.
Cystic fibrosis and pregnancy Cystic fibrosis (CF) is a genetic condition that affects breathing and digestion. You can get a CF carrier screening test to find out if your baby has CF, too.