The knowledge search without limits and the concern of practicing abuses and exaggerations as a result of curiosity divide the human behavior. The ethical theory comes from the need for rational justification of moral actions, toward the own human conscience and other people. As the theory consists of an integrated complex of ethical, coherent and fundamental principles, the ethical theories knowledge is essential for the reflection, especially when is not possible to fulfill all moral requests. The bioethics, originally considered source of general norms and rules for disciplining ethically the scientific investigation, can be regard as a sort of professional ethical code to scientists and researchers, being a group of moral and philosophical reflection concerning life in general and medical practices in particular. In this article, by a literature review, it was aimed to describe and discuss the importance of ethical theories in the bioethics' practice.
Ethical theories; Morale; Bioethics