U.S. life expectancy has doubled since 1776 thanks to vaccines, antibiotics, sanitation and clean water that reduced infectious disease deaths.
Americans today live roughly twice as long, on average, as they did when the Declaration of Independence was signed.
When the nation was founded in 1776, life expectancy was around 35 to 40 years ol… [+7145 chars]
When the nation was founded in 1776, life expectancy was around 35 to 40 years ol… [+7145 chars]