The style of life as a particular type of life activity is one of main factors of health conditionality. This problem needs further investigation. At the same time, study of impact of factors of style of life on health has its own long-standing history and dates from times of Antiquity. The philosophers and sociologists determined the structure of style of life as an aggregate of predominantly subjective behavioral factors impacting in a particular way on health. The folk medicine made a significant input into development of foundation of healthy style of life and its application in treatment. Hereinafter, studying of these issues made it possible to find further development in numerous works of philosophers, sociologists, biologists, hygienists, physicians. Nowadays, the investigation process is going on and traditionally finds its reflection in the WHO activities.