If it baby announcements seem to come all at once from a close group of friends, research shows there may be a reason: Pregnancy can be contagious.
“A friend’s childbearing positively influences an individual’s risk of becoming a parent,” concluded the authors of a 2014 study published in the journal American Sociological Association.
For the study, the researchers analyzed data on 1,720 women who participated in the National Longitudinal Study of Adolescent Health (ADD Health) in the United States from the mid-1990s to mid-2000s. Tracking female participants who were at least 15 years old in 1995 with home interviews throughout the next decade, the researchers saw that roughly half of the women had a child by the time the final interviews were conducted in 2008 or 2009.
(Click link at top to read the studies)
An illustration of a fetal lamb inside the “artificial womb” device, which mimics the conditions inside a pregnant animal.- The Children’s Hospital of Philadelphia
Scientists have created an “artificial womb” in the hopes of someday using the device to save babies born extremely prematurely.
So far the device has only been tested on fetal lambs. A study published Tuesday involving eight animals found the device appears effective at enabling very premature fetuses to develop normally for about a month.
“We’ve been extremely successful in replacing the conditions in the womb in our lamb model,” says Alan Flake, a fetal surgeon at Children’s Hospital of Philadelphia who led the study published in the journal Nature Communications.
“They’ve had normal growth. They’ve had normal lung maturation. They’ve had normal brain maturation. They’ve had normal development in every way that we can measure it,” Flake says.
Flake says the group hopes to test the device on very premature human babies within three to five years.
“What we tried to do is develop a system that mimics the environment of the womb as closely as possible,” Flake says. “It’s basically an artificial womb.”
(click link at top to read on NPR.org)