According to researchers the maximum in human longevity has already been reached. Researchers calculated average maximum human life span at 115 years and 125 years as the absolute limit of human lifespan.
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In other words, to extend the human life span beyond the age to which the oldest people on the planet live until now is next to impossible. It is a pipe dream.
Since the 19th century, human life expectancy has risen constantly. This is due to improvements in nutrition, health facilities and the man-made environment.
A baby born in the United States today can expect to live uptil 79 years of age. Yet in 1900, the average age of Americans was only 47 years before they passed away.
Since the 70s, the maximum age to which human longevity goes has risen yet in recent years there have been diminishing returns on this front. The problem seems to be the biological clock in humans.
The maximum age has a ceiling to it and that seems to have been reached. Many demographics experts and biologists say that there are no limits to longevity. It can virtually go on and on forever given the right conditions. Yet a reality check would be helpful here.
The only issue is that this age ceiling has already been reached and it occurred in the 90s. The Human Mortality Database was examined and it showed the population patterns and ages of death in over 40 countries.
Since the 1900s, these countries have made quite some progress on the longevity curve. The fraction of people who survived uptil the age of 70 and beyond has steadily increased with each passing calender year.
Yet the survival rates for those aged 100 after 1900 remained pretty much even. It looks like the older you get the more likely you are to die due to the conditions which crop up. You cannot escape your biology or the ravages of the environment.
We may have therefore reached the limits of longevity. While there are those very rare people who live uptil 120 years of age, it is a case of the exceptions not proving the rule.
The case of super-centenarians peaked around the 80s and 90s after which it has undergone a plateau of sorts. This plateau occurred in the late 90s. The chronic and degenerative diseases see to it that no one survives beyond a particular age.
At some point Nature decides to cut the string of the kite (so to say in a metaphorical manner). Besides, nobody would want to live forever since it would be more like an exercise in exasperation. It would actually be more like a nightmare.