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What will the life expectancy be in 2040? Forecasting the Future of Longevity

According to a 2018 study published in the journal *The Lancet*, average global life expectancy was projected to increase by 4.4 years by 2040 compared to 2016 estimates. The question of **what will the life expectancy be in 2040?** involves analyzing complex factors, from medical advancements to socioeconomic disparities.