During the last few years several health projects were realised in cooperation with health insurance societies. One of the projects concerned the sports possibilities for people suffering from chronic diseases. Another one supplied information on symptoms of cardiac infarction. Cholesterol levels were analysed, height an body weight were determined and blood pressure was measured. Additionally, several data on anamnesis were stored anonymously as data files. One of the projects was performed with a normal part of the population in the office of a bank. During this arrangement many young people were also examined. Another event was a "doctor-patient-seminar" on the subject of cardiac infarction. We wanted to demonstrate a few interesting differences between the two groups that were examined. We found a circadian difference in the means of blood samples taken at 1-hour intervals, in respect of the cholesterol levels, the time difference being approximately two hours after the last ingestion. The cooperation with health insurance societies is a good possibility in view of the difficult situation of local or communal finances, to realise health education projects with financial support by health insurance societies. The statistical difference between the two examined populations for special risks shows that population groups with coronary insults in their anamnesis and hence treated "on target", yield statistically significantly better results in respect of cholesterol, systolic and diastolic blood pressure, than the group defined as a normal population.