Should Single-Embryo Transfer Be the Standard of Care for IVF?

Newsweek: Twins: The Fetal Paradox, by Amy Klein:

In 2004, Danielle Decrette went in for in vitro fertilization. It wasn’t her first time—she and her husband had a 3-year-old daughter conceived through IVF—and she knew what she was getting into. Just as he had four years before, Decrette’s doctor stimulated her with hormones, extracted her eggs from her ovaries, fertilized them with sperm in the lab and placed the resulting embryo in her uterus. But this time the process failed. So the doctor decided to transfer two embryos in the next round to increase her odds of getting pregnant.

“You know you could have twins,” the doctor warned her before the procedure. . . .

That was 10 years ago. Today, fertility doctors would almost certainly have pushed her away from the idea of a two-embryo implant . . . .