The book "Old age postponed for a long time: the causes of aging and its postponement with the help of hygienic and therapeutic measures" is written by Laurent Arnold. In this work, the author examines the physiology of aging and its causes, and also suggests ways to prolong youth and life through hygiene and treatment. The book is an important addition to thinking about the nature of human longevity and opens up new approaches to maintaining health and youth. The author offers the reader a deeper understanding of the physiology of his body and to influence the aging process in order to continue an active and healthy lifestyle.