Parents who know they are at high-risk for passing on genetic defects that can lead to disease for their child, have been relying on genetic testing to screen embryos for inherited diseases. British scientists announced today they have developed a new test that focuses on DNA fingerprinting near the gene. The new test allows more couples to be tested since they are looking at DNA markers opposed to trying to find the gene, which can vary. According to the researchers, this is a more reliable test. The method involves taking a cell from the embryo to detect signs of the DNA marker and discarding it if it does show the likelihood of gene mutation. Only healthy embryos are used during the in-vitro fertilization, ensuring parents a healthy child.

Right now, there are strict ethical controls on this type of medical procedure, but in the years to come, when these types of procedures become more commonplace, and less expensive, will the controls begin to relax? I am not going to argue against choosing a healthy embryo over one that carries a genetic mutation that might one day lead to disease later in life, but I am still hesitant to embrace where the medical field might be going with these new tests and the potential for superficial application such as -- say -- designer babies. Paris Hilton mommies embryonic shopping for a child. I realize that is an extreme example, but it is the one I fear most. In addition, I am not an adherent of scientific worship and see medical science as a very shaky inexact science. The more I learn, the more I realize they do not know. However, here we are, and you can't un-ring a bell. Hopefully the future will prove all my misgivings wrong.

For more thoughts on designer babies, related posts: Woman pregnant with cancer-free baby and Disease-free designer babies embryo selection.