The Lives to Come: The Genetic Revolution and Human Possibilities

Kitcher has written a searching, valuable guide to the immediate practical consequences and long-range implications of the new molecular genetics. The next decade, he predicts, will make possible hundreds, even thousands, of genetic tests to determine whether people carry genes that predispose them to various diseases or disabilities. He argues that the potential benefits of genetic testing must be carefully weighed against whether effective treatment exists. Stressing that gene replacement therapy is only one among many possible interventions, he foresees a patchwork of therapies, including dietary and environmental changes, to bring relief from hereditary disorders. A philosophy professor at UC San Diego, Kitcher believes that basic medical insurance should be available to everyone, yet he controversially suggests that insurers could demand higher premiums of those born with unlucky genes, provided that the difference in cost did not debar people from receiving coverage. He also wrestles thoughtfully with such issues as genetic screening of job applicants, whether the merciful abortion of a malformed fetus is morally justified and the use of DNA evidence in the courtroom. (Feb.)