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.
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.
Lead poisoning Lead poisoning occurs from high levels of lead in your water or environment. Learn about the risks of lead poisoning in children.