Guide
Kiwi - Life expectancy has changed dramatically over time. In 1900, the
average American lived only about 47 years. By 2000, this had increased to
about 77 years. This improvement came from better sanitation, antibiotics,
vaccines, safer working conditions, and improved nutrition. However, life
expectancy can also decrease, as happened in the United States between 2014 and
2021, when rates dropped due to factors including drug overdoses, suicide, and
disease.
September 19, 2026
Life expectancy
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