Jeanne Calment on her 117th birthday.

Lifespan (length of time a person lives) in humans is between 120 and 150 years says new studies

The research

  • The big names in big tech fund various experiments to find out how and when we die. All have failed in this endeavor
  • The next step was to ask what’s the longest life that could be lived by a human complex system if everything else went well, and it’s in a stressor-free environment
  • The fame that longevity brings posthumously to people who lived well past their century includes that from these scientists
  • They hope to create the perfect environment for survival and search for how long one can live without dying of natural (disease) or unnatural (accidents) causes

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Recent studies

  • Recovery is the condition in which all acting influences are balanced or canceled by equal opposing forces, resulting in a stable system called equilibria
  • The body’s natural capacity to restore equilibria after disruptions to metabolic systems however fades with time. They knew it would come down but when
  • Data on physical activities were collected using wearable devices
  • Complete blood counts (CBC) measurements were used from standard blood tests


  • Changes in blood cell counts were analyzed in different age groups. As age increased the body’s ability to return blood cells incrementally declined
  • Using this predictable pace of decline to determine when resilience would disappear entirely, leading to death, they found a range of 120 to 150 years
  • The end comes when this fundamental loss of resilience happens says findings published in Nature Communications on May 25, 2021.


  • The most effective prevention and treatment of age-related diseases currently improve the average lifespan but not the maximal. For this true anti-aging therapies are needed.
  • The idea of slowing down the aging process has drawn attention as a means to reduce morbidity ie. to diminish illness and confinement at the end of life to extend healthspan
  • A long lifespan is not the same as a long healthspan and the focus should be on living healthier longer and recover quickly from illness

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The record holders

  • Jeanne Calment, the oldest person on record to have ever lived, died in France in 1997 aged 122
  • Jiroemon Kimura from Japan lived for 116 years before passing away in 2013