Ethical Dilemmas in Genetics and Genetic Counseling: Principles Through Case ScenariosKnowledge of the genetic basis of human diseases is growing rapidly, with important implications for pre conceptional, prenatal, and predictive testing. While new genetic testing offers better insight into the causes of and susceptibility for heritable diseases, not all inherited diseases that can be predicted on the basis of genetic information can be treated or cured. Should we test everyone who wants to know his or her genetic status, even when