A study published in the British Medical Journal found women who use a single-embryo transfer are five times more likely to have a healthy baby than women who use the double-embryo method.
The study focused on 1,367 patients who underwent the process, which involves fertilizing a woman's eggs in a laboratory dish. Embryos are then transferred to the woman's uterus.
Many doctors transfer more than one embryo to increase the chance that a woman will become pregnant, but multiple pregnancies are associated with more complications.
