To be independent, cheerful, active at any age - every person strives for this. But alone and at the age of ninety, full of energy. And the other is much younger, but has a lot of ailments. But diseases are not obligatory accompaniments of old age; as a rule, they arise due to human fault. How to prolong youth, and not only external, but also the whole organism? This book is for those who intend to prolong their life and maintain physical and mental activity. It explains why “age-related” diseases occur and how to prevent them. The special value of the publication is that it contains all the time-tested methods of preserving youth. They are simple, but extremely effective.