Why is Human Lifespan Increasing? Key Factors Driving Longer Life Expectancy
Global average life expectancy nearly doubled from 32 years in 1900 to over 70 years by 2021. This astonishing rise begs the question: why is human lifespan increasing? The answer lies in a convergence of public health initiatives, medical breakthroughs, improved living standards, and healthier lifestyle choices that have dramatically reduced mortality across all age groups.