Genetic and chromosomal conditions Genes and chromosomes can sometimes change, causing serious health conditions and birth defects for your baby. Learn about these changes and testing for them.
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.
Thalassemia Thalassemia is a hereditary condition where your body produces fewer healthy red blood cells. Learn how thalassemia is diagnosed in your baby.
Preexisting diabetes If you're pregnant and have preexisting diabetes, you and your baby may face some health concerns. Learn how diabetes affects your pregnancy.