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.
What is full-term? A full-term pregnancy lasts between 39 weeks and 40 weeks, 6 days. Babies born full term have the best chance of being healthy.