- How many embryos to transfer?
A woman’s body is designed to carry one baby at a time. As we mentioned before, twins are associated with 2-3 times more risk for both the mother and child for a broad range of adverse outcomes, from maternal death, still-birth to cerebral palsy.
Transfer of one embryo is now standard for women 40 years and younger , and strongly recommended for women 41 and older. Single embryo transfer is required for almost all publicly funded treatment.