Effectiveness of outputs of a qualified intervention can be valned by several positive criteria corresponding to the „quality of life“ conception, which is based on the feeling of the health and contentment. The finding that great differences in the income among different social groups in conditions of the liberal market society correlate with several health and social problems brought about to the hypothesis that the decrease of the differences in the income, accompanied by strengthening of various forms of the social cohesion, civic solidarity, legitimate egality, and ethical justice may substantially improve the health status of the population. The hypothesis has been verified in many epidemiological studies and found to be valid enough for the health policy and far-seeing economy. Analytics of the World Bank recommend to governments primary invest into the health of socially week groups in order to decrease their poverty and to keep social conciliation. World Health Organization (WHO) sets in its new program for Europe called „21 Goals for the 21st Century“ that differences in the health status among the European states should diminish till 2020 by one third and within the contries by one quarter at least. Both goals should be achieved by a substantial improvement of the health status of the ill-adapted social groups and by significant improvement of those socioeconomical conditions which may have adverse effects namely on the differences in incomes, education and opportunities for employment.

        Key words: preventive programs, effectiveness, social cohesion, solidarity, egality, equality, quality of life, social