Anencephaly is a rare and severe neural tube defect that occurs during fetal development. It is characterized by the absence of a major portion of the brain and skull. The prevalence of anencephaly varies across different populations and regions.
According to the Centers for Disease Control and Prevention (CDC), the overall prevalence of anencephaly in the United States is approximately 1 in every 4,859 live births. However, it is important to note that this prevalence can vary significantly depending on factors such as maternal age, ethnicity, and geographic location.
While anencephaly is considered a rare condition, it is associated with significant morbidity and mortality. Infants born with anencephaly typically have a very short life expectancy, with most cases resulting in stillbirth or death shortly after birth.
Prevention measures such as folic acid supplementation before and during pregnancy have been shown to reduce the risk of neural tube defects, including anencephaly. Prenatal screening and genetic counseling can also help identify individuals at higher risk and provide appropriate support and guidance.