More and more women who give birth are overweight or obese, Green says. These women have a much higher rate of complications like diabetes and hypertension, which can lead to earlier births.. Of the roughly 4 million deliveries in the U.S. in 2002, 394,996 were considered preterm, according to the analysis.
'One-in-a-million' conjoined twins born to Atlanta parents: Delighted mom and dad welcome girls who share the same arms, legs and body-and will never be separated. 1  Asa and Eli Hamby born on Thursday morning in Northside Hospital, Atlanta.
Twins are two offspring produced by the same pregnancy. Twins can be either monozygotic (identical), meaning that they develop from one zygote, which splits and forms two embryos, or dizygotic (fraternal), meaning that they develop from two different eggs. In fraternal twins, each twin is fertilized by its own sperm cell. In contrast, a fetus that develops alone in the womb is called a singleton, and the general term for one offspring of a multiple birth is multiple. Non-related look-alikes whose resemblance parallels that of twins are referred to as doppelgangers.