Bioethics

The bioethical issues being addressed by the field are too numerous to count, but the flavor of bioethics in the early twenty-first century can be conveyed by an exploration of the bioethical implications of genetic research, health care access reform, and stem cell research, arguably the most pressing issue in the field to date.

Advances in the science of genetics, including the Human Genome Project and the ability to find genetic markers for particular diseases, have raised difficult ethical dilemmas. Two of the most pressing issues are preimplantation genetic diagnosis and the genetic testing of adults. With the technology to identify inherited diseases in the early embryo comes questions about which embryos ought to be implanted, which diseases constitute a legitimate moral reason to discard an embryo or become the criterion for embryo selection, which traits ought parents be allowed to select or test for, and who ought to have access to this technology and on what grounds. For example, while there might be widespread support for testing embryos that might carry the trait for Tay-Sachs disease or cystic fibrosis, there are troubling questions about selecting embryos on the basis of sex, nonlethal trisomes (such as Down's syndrome), or aesthetic or character traits that technology may someday be able to screen for. In adult medicine, genetic tests already exist to detect mutations leading to some forms of inherited breast cancer and to Huntington's disease. Here, questions arise about privacy of health care information, psychological impact, stigmatization, lack of informed consent, health insurance access, and familial disclosure. With the advent of commercial genetic testing centers, patients will soon have easy access to genetic tests independent of the practice of clinical medicine, without the benefit of genetic counseling services, professional psychological support, or adequate, and possibly accurate, clinical information. The Internet, for example, will likely bring universal access to any genetic test as it becomes available.