Forty is truly an exciting age. Our mistakes belong to the past and we are now wiser and more daring thanks to our experiences. Perhaps that's why life begins at forty! Politics, economy, science, and art are in our hands. However, we must not forget that high productivity may now come at a great cost to our health and well-being. And even more importantly, our activities and choices at this age decisively determine the further course of our biological condition.

For all these reasons, we believe that a "renewal handbook" is valuable not only for those already in their forties, but also for all others who will reach this age later. Our goal is to inform you about the latest scientific discoveries regarding a (as healthy as possible) way of life that needs to be followed during these critical times. You will discover the right way of eating, exercising, and effectively dealing with the most common problems that arise in your health as well as in your professional, family, or emotional life.

(from the book's preface)