Twin Birth Rate Up 76% in 30 Years

Increased infertility treatments and older moms behind the rise

By Dustin Lushing,  Newser Staff

Posted Jan 4, 2012 4:54 PM CST

(Newser) – The number of twins has surged in the past 30 years, according to a new government study. The twin birth rate went from 189 out of 10,000 births (or 1 out of 53) in 1980 to 333 out of 10,000 births (or 1 out of 30) in 2009—a spike of 76%, reports MSNBC's Vitals blog. What's behind it? Experts point to an increased use of infertility treatments and to the growing number of women giving birth at a later age.

The study's lead author says it's not necessarily good news: “It’s really important to note that outcome for twins is much less positive than for singleton pregnancies."

The US is seeing a lot more of these.   (Shutterstock)
The US is seeing double far more often these days.   (Shutterstock.)
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