Stem cells are unique among the cells in the body. They can transform into every specialized cell, including blood, bone, nervous, muscular, skin and more. Usually, during a child’s growth, these cells ensure the formation of organs and tissues. In adults, they lead to the renewal and restoration of worn and damaged organs and tissues. The newborn has a large population of stem cells, but with age, this number decreases. Hence, the body’s ability to renew and restore the damaged parts due to age and disease is irreversibly reduced. Due to such properties, stem cells are given much attention in medical practice. The regenerative effect of stem cells determines their use in treating many diseases, including oncological, neurological, genetic, orthopedic, and others. Based on the results of active clinical trials worldwide, the range of diseases stem cells successfully treat is constantly increasing.