The fourth "Praevenire Gesundheitstage" in Seitenstetten will take place from May 15th to 17th. The conference aims to bring about change in the health care system by including all relevant stakeholders. IHS Director Martin Kocher and Thomas Czypionka will also attend the conference. Martin Kocher will talk about ways to get the public to take preventive health care measures. Thomas Czypionka will hold two keynotes and participate in the following discussions. The first keynote is about health as an economic factor, the second one deals with prerequisites for a health care system.