权贵富豪渴望永生。倘若他们真能如愿呢?
科技巨头、国家元首与亿万富豪正投入巨额资金,试图破解衰老的密码,追求延长寿命甚至实现永生。然而,如果长寿技术率先造福精英阶层,由谁来定义何为“自然寿命”?又将对社会公平、人口结构和代际更迭产生怎样的冲击?本文深入探讨了少数人追求永生可能给多数人带来的深远影响。
科技巨头、国家元首与亿万富豪正投入巨额资金,试图破解衰老的密码,追求延长寿命甚至实现永生。然而,如果长寿技术率先造福精英阶层,由谁来定义何为“自然寿命”?又将对社会公平、人口结构和代际更迭产生怎样的冲击?本文深入探讨了少数人追求永生可能给多数人带来的深远影响。
The prevalence of dementia at given ages has decreased compared to decades ago. Today's 90-year-olds have less than half the dementia risk compared to those in 1984.
Research indicates that the heritability of human lifespan is approximately 50% when using a redefined concept of heritability. This suggests genetic factors account for about half of lifespan variation, while environmental and other factors contribute the remaining half.
Heritability measures how much of the variation in a trait within a population is due to genetic differences. It does not indicate how much of an individual's trait is determined by genes versus environment. The concept is often misunderstood in discussions about intelligence, personality, and other complex traits.