Can you imagine giving birth to a baby this size?! ???? The biggest baby by natural vaginal birth weighing roughly 17.47 pounds (7.9 kg) and 22.5 inches (57.5 cm) long! The term „fetal macrosomia“ is used to describe a newborn who’s significantly larger than average. A baby diagnosed with fetal macrosomia has a birth weight of more than 8 pounds, 13 ounces (4kg), regardless of his or her gestational age. Fetal macrosomia may complicate vaginal delivery and could put the baby at risk of injury during birth. Fetal macrosomia also puts the baby at increased risk of health problems after birth. Fetal macrosomia can be caused by genetic factors as well as maternal conditions, such as obesity or diabetes. Macrosomic babies are usually delivered by Caesarian section if the predicted weight is 11 pounds (5,000 grams) or more.