The life expectancy for humans in the United States in 2014 is 77.5 years from birth. However, as people age they have an increased expectancy. This is due to the fact they have survived numerous potential causes of death.
An individual who reaches 65 years old has an increased expectancy of more than 18 years, as of 2014. Individuals who live to be 75 can expect another three years of life, in addition to the extra years of expectancy gained from reaching 65. Men tend to die at a younger age than women. The life expectancy in the United States was 68 years from birth in 1950.