We are getting older and theoretically have more options to extend and improve our lives. However, the reality often looks different. We invest vast sums in improving our health, even though we have much control over it ourselves. Nevertheless, more and more people are falling ill. We try various remedies and either die completely unexpectedly or suffer for a long time or are forgotten in nursing homes. What are the key levers that help us stay fit and lead a fulfilling life? This easily understandable work humorously and entertainingly explores why we often do not live as long as we could and illustrates the role of genetic predisposition and lifestyle factors such as stress, education, nutrition, exercise, and sports. It also insightfully presents psychological, psychosocial, and socio-economic factors and their impact on health and life expectancy. At the end, the reader receives valuable hints and tips on how to live longer, healthier, and more contentedly. Completely revised new edition.