It has been shown with special reference to the studied risk factors o
f coronary heart disease that at present a differentiated approach to
the evaluation of epidemiological and experimental data is required. T
he pathogenetic interpretation of the data may seem relatively obvious
, whereas the practical evaluation of individual risk of health loss a
nd death as well as preventive measures are not effective and attracti
ve enough for an individual subject. Introduction of individual progno
sis and preventive programs should be based by means of analysis of th
e benefit and losses ratio due to those programs.