Fast developments in information and communication technology have made it possible to develop new services for people. One of the most interesting areas is health care. Medical informatics is the discipline concerned with the systematic processing of data, information and knowledge in medicine and health care. Information services, medical decision support systems and telemedicine are becoming important tools for medical professionals and also people who are interested in health related information. Medical decision support aims at providing health care professionals with therapy guidelines directly at the. point of care. Telemedicine is the use of modern telecommunications and information technologies for the provision of clinical care to individuals at a distance and transmission of information to provide that care. In the present study. usage of information technologies in medicine, medical decision support systems, computerized medical measurements, patient education and network connectivity was described. A model for risk evaluation, data collection and education of undiagnosed diabetes using the world wide web (www) was presented.