Although the average life expectancy has consistently risen since 1900, researchers say humans have reached a maximum life span.
That means we probably won't see anyone living to the age of 200.
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Scientists at the Albert Einstein College of Medicine say the human lifespan has a ceiling, which has already been reached.
They calculated the average maximum lifespan is 115 years, with the absolute limit being 125 years.
The oldest living person in history, Jeanne Calment died in 1997, at the age of 122.