and clinical center, if we hope, if compared with the seventies and eighties, the era of the kremlin eldersch science has advanced in the field prolongation of active life, in fact , a lot has changed and a very vivid example of what has changed. this is a very simple number called life expectancy at birth. i want to say that in the eighties of the last century. it was 60 there, plus or minus five years, and now we have 73 figures speak for themselves, and this is a fact, this is science, this is statistics. over the past 70 years, the average life expectancy in the world has increased by 23 years, if in the middle of the 20th century this figure for men and women was about 46 years, then in last year, it is no secret that life expectancy is largely influenced by the level of development of healthcare and the availability of medical services in the country in 2021 against the backdrop of the coronavirus pandemic, life expectancy in a number of countries has decreased from 73 years to 71 years. moreover , it changed in different ways depending on the region, if in central and south asia , as