Sentences with phrase «lifespan by centuries»
Life extension therapies have increased the human lifespan by centuries.
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The study found that in the 18th and 19th centuries, about four to 18 per cent of the variation between individuals in lifespan, family size and ages at first and last birth was influenced by genes, while the rest of the variation was driven by differences in various aspects of their environment.
As demonstrated by Leonard Hayflick a half - century ago, human cells have a limited replicative lifespan, with older cells reaching this limit sooner than younger cells.
A report published last year by the Intergovernmental Panel on Climate Change predicted that the lifespan of individual high - temperature records will continue to shorten: heat records that would likely have stood for twenty years in recent times will topple after an average of just two years by the end of the century.
By the mid-twentieth century, industrial countries had already made major strides in extending lifespans with improvements in sanitation, nutrition, and public health.