The study also found that women are increasingly implanting only one embryo in an IVF cycle. Because doctors are unable to predict with certainty which embryos have the best chance of resulting in a healthy baby, many women implant more than one embryo during an IVF cycle, increasing the odds that at least one of the embryos will survive. However, between 2000 and 2010, the percentage of women who transferred only one embryo, and thereby avoided the possibility of multiple births, increased from less than 1 percent to 15 percent.
However, the process is wrought with ethical controversy, as many clients don’t know what to do with the extra embryos created: An estimated 600,000 frozen embryos are stored in fertility clinics throughout the United States. “The vast majority of people don’t have a plan,” says Daniel Nehrbass, executive director of Nightlight Christian Adoptions, an organization that does embryo adoptions. “They don’t want to destroy them because there is finality to that. So they store them and the years go by.” In the face of many grey ethical issues, including the question of whether couples should pursue IVF at all, Nehrbass said NightLight sees two things as black and white: “Embryos are human life, and they deserve a chance to be born.”
Medical Director for the National Embryo Donation Center Jeffrey Keenan, MD: “Currently there are more than 600,000 cryopreserved embryos in liquid nitrogen tanks in U.S. fertility clinics alone. Although some 80 percent of couples say that they plan to use these for future reproduction, the reality is that a large percentage of these will never be thawed and replaced in the genetic mother’s uterus. Because cryopreservation has only been performed for about 25 years, no one really knows what the ultimate fate of these embryos will be. It is possible that many will eventually be destroyed, donated to destructive and unfruitful embryonic stem cell research or even left as a sort of ‘inheritance’ for the children (genetic siblings).
“What created this problem is the marked improvement in IVF success rates, an increase in the number of procedures and the more prevalent use of donor eggs as noted in this article (donors generally produce more eggs of better quality with higher pregnancy rates). At the same time, most clinics have not changed their practices which typically involved inseminating ALL eggs regardless of the number or likelihood that there will be additional embryos remaining long after the couple has completed their family building plans.
“Unfortunately, the American College of Obstetrics and Gynecology and other professional bodies do not even consider an embryo a viable being until it has implanted in the uterus. This view has at least contributed to the almost complete disregard for the lives of embryos by most members of our profession.
“The National Embryo Donation Center was founded with the assistance of the CMDA and performed its first embryo transfers in 2003. So far, more than 400 children have been born or are awaiting birth as a result of the NEDC’s efforts, making it the largest and most successful provider of embryo donation/adoption services in the world. The NEDC advocates limiting the number of eggs inseminated with each IVF cycle, as well as increasing the excellent alternative of freezing eggs rather than embryos. NEDC is currently seeking affiliates in multiple cities around the country to perform adoptive embryo transfers.”
Embryo Adoption: One Family's Testimony
Beginning of Life Ethic Statement
Assisted Reproductive Technology Ethic Statement