IVF can favor the birth of boys because the IVF procedure may cause defects in X chromosome inactivation, which results in fewer girls being born.
According to research, the IVF procedure itself appears to influence the sex ratio at birth.
- Defects in X chromosome inactivation: IVF procedures have been linked to defects in X chromosome inactivation.
- Fewer girls born: These defects can result in a lower number of female births compared to male births.
In simpler terms, the manipulation involved in IVF can sometimes disrupt the normal process where one of the X chromosomes in female embryos is inactivated. This disruption may lead to fewer female embryos developing successfully or being implanted, thereby slightly increasing the likelihood of a male birth.
