During the 20th century, how much did Americans' life expectancy increase by?

The increase in life expectancy for Americans during the 20th century is notably significant, reflecting advances in medicine, public health, nutrition, and overall living conditions. Throughout the century, various improvements such as the introduction of vaccines, better maternal care, and reduced infectious diseases contributed to longer lifespans.

In terms of specific numbers, life expectancy at birth increased roughly from around 47 years in 1900 to about 77 years by the end of the century. This approximate increase of 30 years exemplifies the transformative changes in health and wellness experienced by the population during this time. Such advancements resonate strongly with the themes of healthcare evolution and the impact of socio-economic factors on longevity. Understanding this increase is crucial for those studying the aging population and the services required to support them.