Ethics in parenteral and enteral nutrition Daldiyono Division of Gastroenterology, Departments of Internal Medicine, Medical Faculty-University of Indonesia, Formerly chairman of the Indonesian Society of Parenteral and Enteral (INASPEN 1996-1999) Talking about ethics in parenteral and enteral nutrition we have to adopt the concept propose by I E Thompson (C.I Phillips ed. Logic in Medicine, BMJ Publishing Group 1995, 170-192) who divided the ethics into 4 (four) levels, these are macro ethics, meso ethics, macho ethics and micro ethics. The macro ethics is concerning in the ethical thinking and decision in the level of decisions makers such as the World Health Organization, the government, medical society as well as PENSA. The role of PENSA is promoting the ethical conduct in the field of Parenteral and Enteral Nutrition among societies and doctors in the area of ASIA. In the level of meso ethics and macho ethics, research and establishment of standard procedure are the main topics. One of an example of meso ethics in research in parenteral and enteral is, that is does not allow to compare the substance (nutri-ent) with placebo, as nutrition is an obligatory for the patient as well as for healthy people. In the level of micro ethics. The topics are the ethical conduct of doctors in practicing of parenteral and enteral nutrition and in the delivery of nutrition to the patient. The basic concept in the level of micro ethics are: a. Everything only for the benefit of the patient. b. Do not harm. c. The doctors do the best. The purpose of this abstract is to show to the community that PENSA fulfill the duty in the promoting ethics among members as mention in the concept of macro ethics. From "The 7th Congress of the PENSA Abstract Book" Bali, Indonesia, August 24-26, 2001 : Page : 8