When you think about having a baby, you assume that your chances of having either a boy or a girl are about 50% right?
Well, there seems to be one scenario where this mathematical reasoning is not holding true. Researchers at the Mount Sinai School of Medicine and Reproductive Medicine Associates in New York sat down to really look at their sex ratio results of pregnancies resulting from IVF. What they found was that the timing of when they transferred the embryo had a pretty significant impact on whether or not the mom to be would give birth to a boy or girl.
Here are the specifics from the study:
Embryos transferred on day 3 after being harvested and cultured, mirrored the odds of having a baby naturally; about 51 percent male and 49 percent female. Here is the interesting part though….. When embryos were transferred 5 days after being harvested and cultured, the numbers changed to 58 percent male and 42 percent female. And…when they looked at single babies born from IVF, the number skyrocketed to 64 percent male and 36 percent female.
They don’t know why this happened, but it does make it interesting to think about the sex of your baby being determined by which fertility procedure you have done!