Zika virus and pregnancy Zika infection during pregnancy can cause a birth defect called microcephaly and other brain problems. Learn how to protect yourself from Zika.
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.
Thyroid conditions during pregnancy Untreated thyroid conditions during pregnancy are linked to serious problems. Learn how to have a healthy pregnancy and baby.