War leaves behind not only visible physical scars, but also deep psychological trauma. According to experts, 12–20% of people who have experienced traumatic events develop post-traumatic stress disorder (PTSD). In modern combat conditions, military personnel are exposed to enormous levels of physical and psychological stress, which leads to exhaustion of the nervous system.

The main paradox of modern psychiatry: every year millions of people start taking antidepressants, but, according to statistics, about a third of patients with major depression do not experience any improvement, and another third refuse treatment due to severe side effects.