https://www.ancient-origins.net/news-evolution-human-origins/life-expectancy-myth-and-why-many-ancient-humans-lived-long-077889
>scientists have compared the life span of adults in contemporary hunter-gatherer tribes (excluding the infant mortality rate). It was found that once infant mortality rates were removed, life span was calculated to between 70 and 80 years, the same rate as that found in contemporary industrialised societies.