Donor Egg Pregnancies Becoming More Common

That ideal result occurred in about 1 out of 4 donor egg pregnancies in 2010, up from 19 percent a decade earlier, the study found.

Almost 56 percent resulted in a live birth in 2010, and though most of these were generally healthy babies, 37 percent were twins and many were born prematurely, at low birth weights. Less than 1 percent were triplets. Low birth weights are less than about 5½ pounds and babies born that small are at risk for complications including breathing problems, jaundice, feeding difficulties and eye problems.

For women who use in vitro fertilization and their own eggs, the live-birth rate varies by age and is highest — about 40 percent — among women younger than 35.

Women who use IVF with donor eggs are usually older and don't have viable eggs of their own. Because the donor eggs are from young, healthy women, they have a good chance of success, generally regardless of the recipient's age.

The average age of women using donor eggs was 41 in 2010 and donors were aged 28 on average; those didn't change over 10 years.

The study, by researchers at Emory University and the federal Centers for Disease Control and Prevention, was published online Thursday in the Journal of the American Medical Association and presented at the American Society for Reproductive Medicine's annual meeting in Boston.

Image: Pregnant woman, via Shutterstock

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