A study published in the Proceedings of the National Academy of Sciences suggests the steady rise in life expectancy may be slowing for people born between 1939 and 2000. Researchers analyzed mortality data from 23 high-income nations and found that the rate of lifespan improvements has declined by 37-52% compared to earlier generations. Projections indicate none of these cohorts are expected to reach an average life expectancy of 100 years, in contrast with past predictions. The slowdown is attributed to diminishing returns, as the substantial gains in the 20th century came primarily from reducing childhood and young adult mortality, areas where further progress has become more challenging. While medical breakthroughs could potentially offset the deceleration, the study indicates the era of generation-to-generation increases in longevity may be nearing an end for those already born. (StudyFinds)
