Dynamics of population structure in BRICS countries

Russia has entered a phase of demographic evolution characterized by depopulation and intense process of demographic ageing. Following Russia, other CIS countries are entering this phase but in different forms. These trends are indicative of a deep civilizational crisis caused by the change of cycles and require interdisciplinary studies. The demographic component of the genotype of both society and civilization is triadic in nature, being at the intersection of nature, population and economy. Structure and dynamics of population are in many respects determining factors of social changes. At present, the most adequate are demographic indicators allowing us to see the direction of the ongoing changes: population reproduction, dynamics of life expectancy, survival and healthy life expectancy; constantly maintained ratio of the ethnic groups of population; share of extended families (with many children, multigenerational) in the family structure of society.