Health span, lifespan, and the gap between them

The chapter explores the concepts of health span and lifespan, explaining the relationship between the two and how lifestyle choices and habitat can affect brain and body function. It delves into the high rates of childhood illness and diseases and criticizes the healthcare system for focusing on managing diagnosed diseases rather than promoting overall health. The chapter emphasizes the importance of vitality, energy, physical strength, and emotional resilience in defining a healthy human being.