A Person Crossing a Bridge The prospect of eternal youth and longevity has intrigued humanity for centuries. Today's fascination with anti-aging has ballooned into a massive, multi-billion dollar industry. But while many perceive human lifespan to be increasing, the rise in chronic diseases suggests we should focus more on living healthier for longer and improve our health span - or healthy life expectancy. A four-part Netflix documentary "The Blue Zones" explores certain reg