Using Three or More Embryos in IVF Won’t Get You Pregnant Faster Photo: Thinkstock / The Bump
IVF might be a big splurge, but you won’t get more bang for your buck if you implant three or more embryos. A new study in a British medical journal The Lancet, says women who get three or more embryos implanted in IVF do not have a higher chance of conceiving than women who only had one or two embryos transferred.
The study looked at 124, 000 IVF cycles between 2003 and 2007 in which 33,000 babies were born. This group did not include IVF treatment with frozen embryos. Researchers analyzed the ages of the women and put them into two groups: over 40 and under 40. They found that in women over 40, there was a higher rate of births if they transferred more than one embryo, but there were more health complications for mom and baby if there were three or more embryos transferred. For the women under 40, if they had two embryos transferred, the birth rate was 33 percent and if they had three embryos, the birth rate was 25 percent.
The reason for the lower birth rate with more embryos is that the more babies you’re carrying, the higher the risks. Researchers who performed the study recommend the transfer of only one embryo if a woman is under 40 and one or two embryos for women over 40. Other experts argue that there are limitations to the study because the women were divided into only two groups so women who in their mid to late 30s weren’t more closely stufies. Instead they believe that the number of eggs to be implanted should be decided on a case-by-case basis.
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