Semey Medical University

National time zone unification in Kazakhstan altered healthcare utilization and circadian re-entrainment patterns

Abstract In March 2024, the Republic of Kazakhstan unified its administrative time to UTC + 5, creating a nationwide natural experiment across a 30-degree longitudinal gradient. This structural shift offered a rare opportunity to evaluate how abrupt temporal restructuring correla...

Radiation Exposure and Cancer Mortality in Populations Living Around the Semipalatinsk Nuclear Test Site in Kazakhstan

Introduction. Mortality rates from malignant neoplasms can be considered a key marker of adverse environmental impacts. The aim of this study was to assess the association between exposure to ionizing radiation and the risk of mortality from malignant neoplasms among the populati...