
The number of people living past the age of 80 worldwide is projected to triple by 2050 — from approximately 145 million today to roughly 426 million — making the over-80 cohort the fastest-growing demographic on the planet, in a civilizational shift now widely referred to as “the silver tsunami” and that researchers expect to redefine almost everything we associate with the structure of human society
The 80-year-old is, in historical terms, an unusual phenomenon. For most of recorded human existence, the average life expectancy at birth sat somewhere between 25 and 35 years, primarily because of childhood mortality.














