Human longevity records may be broken in the next few decades, a new modeling study suggests.
Scientists have long debated the greatest possible age of a person, with previous studies placing the limit at up to 150 years. But in the past 25 years, no one has surpassed the record for the world's oldest person, held by Jean Louise Calment, who died at age 122 in 1997.
The researchers found that this was generally the case among those born before 1900. However, the mortality rate trends in people born between 1910 and 1950 appear to be different. This group reached the old age-related plateau at older ages than the pre-1900s group had, and they didn't see sudden upticks in mortality at old ages to accompany decreases in mortality seen at younger ages. This finding hints we have not reached the maximum human life span, McCarthy said.
However, the model has a major limitation: It does not account for the biology of aging. In other words, in predicting who has a decent chance of living past age 122, the model doesn't account for the fact that people's cells age over time and they become more prone to age-related diseases, like cancer. It also doesn't acknowledge how advances in medicine might extend human life span in the years to come.
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