The monograph is devoted to a comprehensive study of the reactions of human operator body systems (clinical-physiological, hematological, psychophysiological, psychological and activity shifts) in response to acute alcohol intoxication of moderate degree. The effect of factors of age, time of day, complexity of activity, as well as initial anthropomorphological characteristics on the complex of body reactions and performance at various times after alcohol stress was studied. The book is intended for hygienists, physiologists, narcologists, specialists in occupational medicine, practical doctors, health organizers in production and transport.