One in every 160 pregnancies results in a stillbirth. The vast majority of stillbirths occur prior to labor, with only a tiny number occurring during labor and delivery. Most stillbirths are due to problems with the fetus or placenta rather than maternal health issues. Stillbirth is the death of a baby after twenty-four weeks' gestation or more likely before birth because of serious defects in the brain or other organs. A stillborn child may appear live but lack any signs of life such as breathing, heartbeat, reflexes, color, or appearance. Many factors can affect a woman's chances of having a stillbirth including age, race, ethnicity, marital status, previous history of stillbirths, access to health care, nutrition, and infection prevention. Stillbirth rates vary across the world. For example, an estimated 1 in 85 births in America ends in stillbirth, while in India it is 1 in 70. The cause of most stillbirths is unknown. However many studies have identified risk factors for this tragic outcome.