长命百岁不仅不是梦，还只是半马：194岁生日快乐！
一项新研究表明，人类年龄的生物学极限为194岁。
发表于《npj Aging》的一个数学模型探讨了一种假设情境：届时重大疾病和经典的细胞衰老标志已被彻底根除。研究人员聚焦于体细胞突变——即那些在我们一生中逐渐在细胞内积累的随机、非遗传性DNA变化。
他们发现，不同器官之间存在显著的生物学不对称性：虽然肝脏和皮肤等可再生组织能够替换受损细胞，理论上可维持功能数千年，但大脑和心脏中的非分裂细胞却无法如此。这些重要器官如同永久性的瓶颈，终其一生吸收着遗传错误，直至衰竭不可避免。
在没有任何遗传退化的情况下，该模型中的非衰老基线人类中位寿命为1759年；然而，一旦引入体细胞突变，这一数字骤降至仅156年，绝对上限范围在146至194年之间。这项理论实验并非对超长寿命即将到来的预测，而是对未来医学的警示：即便生物技术能够逆转细胞衰老并治愈慢性疾病，科学家仍必须解决DNA自发衰变这一根本性的熵增问题，才能将人类寿命推至这一细胞极限之上。
来源：Efimov, E., Fedotov, V., Malaev, L., Khrameeva, E. E., & Kriukov, D. (2026). Somatic mutations impose an entropic upper bound on human lifespan. npj Aging.
A new study indicates that the biological limit of human age is 194 years.
A mathematical model published in npj Aging explores a hypothetical future where major diseases andic cellular hallmarks of aging are completely eradicated. Researchers isolated somatic mutations—the random, non-heritable DNA changes that gradually pile up in cells throughout our lives.
They discovered a stark biological asymmetry across organs: while renewing tissues like the liver and skin can replace damaged cells and theoretically function for thousands of years, non-dividing cells in the brain and heart cannot. These vital organs act as permanent bottlenecks, absorbing genetic errors over a lifetime until failure becomes inevitable.
Without any genetic degradation, the model's non-aging baseline human had a median lifespan of 1,759 years; however, introducing somatic mutations slashed that number to just 156 years, with an absolute upper range of 146 to 194 years. This theoretical experiment is not a prediction of imminent super-longevity, but rather a warning for future medicine. Even if biotech can reverse cellular aging and cure chronic disease, scientists will still have to solve the fundamental, entropic problem of spontaneous DNA decay to push human lifespans past this cellular ceiling.
source: Efimov, E., Fedotov, V., Malaev, L., Khrameeva, E. E., & Kriukov, D. (2026). Somatic mutations impose an entropic upper bound on human lifespan. npj Aging.
