M. : KMK, 2001. — 83 s. The main task of the book is to characterize the elemental component of the human ecological portrait. As a result of complex ecological and physiological studies conducted in various natural and climatic conditions, regional features of the elemental balance in the population have been identified. The important role of the elemental composition of the habitat in the formation of the ecological portrait of man is shown. The general issues of diagnosis of microelementosis (MTOS) and the prevalence of MTOS among children in the Russian Federation are described. The role of MTOZs in increasing the risk of oncological diseases . Measures to optimize the microelement balance in the population are described. The book is intended for medical researchers, doctors, ecologists and biologists.