Life expectancy varies greatly around the world. See which countries have the highest and lowest life expectancy.

A study published last month in the medical journal The Lancet found a gap of more than 20 years between U.S. demographics with the highest and lowest life expectancies. The study, conducted by the ...

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The average life expectancy changes greatly based on gender with women living to 80.2 years and men to 74.8 years nationally (75.9 years for women and 68.8 years for men in Louisianans). Life ...