What is the deterioration of the demographic situation in Russia? What factors determine this negative phenomenon?

The demographic situation in our country is getting worse as a result of a number of factors:

-The lifestyle of the population. Alcoholism, drug addiction, etc. This leads to an increase in mortality and reduces life expectancy to an indecent level for a developed country (74 years instead of 80), negatively affects the birth rate.

-The demographic crisis of the 1990s-early 2000s, then the death rate rose sharply and the birth rate fell to almost the lowest level in the world. As a result, almost two times less children were born in 1999 than in 1987. It is this factor that determines the decline in the birth rate after 2015.