Suicide mortality monitoring provides important information that may be interpreted within social determinants of public health. Suicide mortality during the pandemic, contrary to many fears, did not increase, but the situation in the post pandemic period, when new challenges emerged, has not been studied yet. Surveillance in the Northwestern Federal District over the past 7 years has revealed a sharp decline in mortality in 2023 in some subjects, particularly in St. Petersburg (SPb) and Leningrad Oblast (LO). We calculated average annual mortality rates per 100,000 population with confidence intervals (as per Wilson). For detailed analysis we used the division of society into generations — up to 19 years old (generation Z), 20–39 years old (millennials, Y), 40–59 years old (generation X) and > 60 years old (“baby boomers” and traditionalists). Suicide indices in LO are significantly higher than in SPb, which is probably due to the higher proportion of rural population. The sharp decrease in mortality in 2023 in both subjects appeared to be most pronounced and statistically significant among men aged 40–59 and over 60. While the mortality rate among women in the older groups is generally decreasing, it is either stable or tends to increase among women under 39 years of age. From the perspective of the role of social integration, according to Durkheim theory, the sharp decline in male suicides can be attributed to increased social cohesion, signs of social optimism, as well as military and economic mobilization during the special military operation. At the same time, when large contingents return from the conflict zone, prevention measures should be considered, taking into account possible jobs competition between young and older male groups, as well as the likelihood of an increase in the prevalence of post traumatic stress disorder.

suicide, mortality, sex and age groups, time series dynamics, North Western Federal District, St. Petersburg, Leningrad oblast.