Harvard Health Blog

What’s in a number? Looking at life expectancy in the US

By: Scott Weiner, MD, Contributor If you were to sum up the overall health of a nation in one single number, what would that be? At the top of the list, you would likely find average life expectancy the total number of years, on average, that a person in a country can expect to live. Wars, famine, and economic crises are expected to lower life expectancy. Breakthroughs in science, strong economies, and behaviors like…

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