STUDYING THE DYNAMICS OF CANCER INCIDENCE AMONG THOSE EXPOSED TO THE DIRECT RADIATION AND THEIR DESCENDANTS, AS A RESULT OF NUCLEAR WEAPONS TESTS AT THE SEMIPALATINSK TEST SITE

Abstract

Cancer effects of ionizing radiation are markers of radiation damage, and their levels depend on the values of the effective dose equivalent. In order to assess the dynamics of cancer prevalence, for the period 2010-2014, in the radiation risk group, representing the population of some areas of Kazakhstan adjacent to the Semipalatinsk nuclear test site, we formed 2 dose groups, represented by two groups of people directly exposed to radiation at a dose of 100,0-199,0 mSv and 200,0-250,0 mSv and over aged 50 and older and their descendants in the second generation aged 40-49. High relative risks of total cancer incidence were registered in the main group and the comparison group, also more than two-fold and half fold excess of relative risks for lung cancer and bronchus, breast cancer was established. Cancer excesses in the main group and comparison group were recorded over the age of 40, reflecting their post-radiation implementation in the remote period after the formation of effective doses (40-50 years), in the group of persons exposed to direct radiation and their descendants in the second generation (aged 40-49 years).