Baby Boomers Mark Mortality Inflection

A PNAS cohort analysis shows the 1950s birth cohort (Baby Boomers) is the turning point where prior steady gains in U.S. longevity slow or reverse for later cohorts, with people born since 1970 experiencing worse cardiovascular, cancer, and external‑cause mortality than their predecessors. The slowdown since 2010 is strongest for cardiovascular disease and implies societal (not purely biological) drivers. — If cohort‑level mortality deterioration persists, it will reshape workforce size, healthcare demand, and policy priorities across decades.