Tuesday, May 13th, 2014
The number of American women who are having kids after age 35 continues to rise, according to new data from the Centers for Disease Control and Prevention. More from Time.com:
The average age of women at their first birth has also risen over the past 4 decades, and since 2000, 46 states and DC have experienced a rise in the first-birth rate for women over 35.
“We are definitely seeing this in our practices,” says Dr. Rebecca Starck, chair of the department of regional obstetrics and gynecology at Cleveland Clinic. Given what we know about the risks associated with pregnancy at later ages, should we be worried?
“A healthy 40 year old can have a much less risky pregnancy than a healthy 28 year old,” says Starck, especially if she prepares her body for pregnancy with healthy food and exercise. Once pregnant, eating well, gaining the right amount of weight and abstaining from harmful behaviors like smoking also make a big difference.
The new report also shows that first time older mothers are generally more educated and more likely to have more resources like higher incomes than women of the youngest reproductive ages.
But the over-35 set still tend to face more risks and complications. For instance, the risks of having a child with a genetic disorder rise after 40, says Starck. It’s still very likely the baby will be healthy and won’t have a chromosome problem, she adds, but the risk does go up proportionally with age.
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Image: Mother and baby, via Shutterstock
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Thursday, January 5th, 2012
A new report from the Centers for Disease Control and Prevention found that 1 in every 30 babies born in America in 2009 was a twin, a sharp rise from the 1 in 53 statistic from 1980. Researchers attribute the rise to two main factors–a rise in the number of assisted reproductive technologies, such as artificial insemination and in vitro fertilization, and women waiting until they are over 30 to start their families, both of which are known to statistically increase the likelihood of twin pregnancies.
As many as one-third of twins are born to women over 30 but under 40, Joyce Martin, an epidemiologist who co-authored the Centers for Disease Control and Prevention report, told The Associated Press. The rest of the increase is due to the wide use of fertility treatments. From the AP:
“You have a double whammy going on. There are more older moms and more widespread use of fertility-enhancing therapies,” Martin said.
Starting in the early 1980s, couples who had trouble conceiving began to benefit from medical advances like fertility drugs and in vitro fertilization and other procedures. These treatments became fairly widespread in the 1990s but are expensive, and availability and insurance coverage varies.
The twin birth rate rose by more than 2 percent a year, on average, from 1980 through 2004. It leveled off to less than 1 percent annually although the rise from 2008 to 2009 was nearly 2 percent.
In 2009, twin rates increased in all 50 states, though the jumps were highest in lower New England, New Jersey and Hawaii. In Connecticut, twins now account for nearly 5 percent of births.
That’s high. Nationally, 3.3 percent of all births were twins in 2009, up from 2 percent in 1980.
Over the last three decades, rates rose for white, black and Hispanic women, but the increases were not uniform. Rates doubled for whites, rose by half for blacks and by about a third for Hispanics. Historically, black moms have twins most often, but white moms have almost caught up.
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“That’s changed with infertility treatments,” said Barbara Luke, a Michigan State University expert on twin births.
Image: Twin babies, via Shutterstock.