Are more babies born if embryos are cultured for three or five days in the lab? Trial suggests that age matters

Women are just as likely to give birth to live babies after fertility treatment if embryos are transferred to their wombs three days after fertilization in the laboratory rather than five. However, the women’s age can affect the outcomes, according to new research presented to the 39th annual meeting of the European Society of Human Reproduction and Embryology (ESHRE).