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.
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.
Gestational diabetes Untreated gestational diabetes can cause premature birth and stillbirth. Find out if you may be a risk for gestational diabetes.