Sperm and Egg Donors

Likely make twins



American women are turning to egg donors for pregnancy. Yet, results are fraught with unpredictability, according to new research from Emory University and the federal Centers for Disease Control and Prevention, published online in The Journal of the American Medical Association and presented at the American Society for Reproductive Medicine’s annual meeting in Boston. The ideal is one normal weight baby but more frequently twins and preemies result. Ideal results were limited to 25% of pregnancies in 2010—a small increase of six percent from ten years earlier.

Just under 56% of donor pregnancies led to live birth but low birth weights (less than 5.5 pounds) were prevalent raising risk for jaundice and neurobehavioral problems; 37% were twins. Women using their own eggs for in vitro fertilization had about a 40% live birth rate. Women relying on donors are older with less viable eggs. But their donor eggs are from young fertile women. Average donor recipient age: 41. Donor age: 28.

Dr Jennifer Kawwass of Emory University said identifying which embryos have the best chance of resulting in healthy babies is needed. The reason for so many twins is doctors implant more than one egg to increase the odds of live pregnancy.

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