The U.S. infant mortality rate declined 2.3% from 2013 to 2014, reaching a record low of 582.1 per 100,000 live births, according to data released on Wednesday by the CDC’s National Center for Health Statistics. At the same time, deaths from Alzheimer disease rose 8.1%, to 25.4 per 100,000 population. As in 2013, Alzheimer’s was the sixth leading cause of death in 2014.Since 2012, life expectancy at birth has held steady at 78.8 years — the highest it’s ever been. 
Life expectancy at birth represents the average number of years that a group of infants would live if the group was to experience, throughout life, the age- specific death rates present in the year of birth. In 2014, life expectancy at birth was 78.8 years for the total U.S. population – 81.2 years for females and 76.4 years for males, the same as in 2013. Life
expectancy for females was consistently higher than life expectancy for males. In 2014, the difference in life expectancy between females and males was 4.8 years, the same as in 2013.
Life expectancy at age 65 for the total population was 19.3 years, the same as in 2013. Life expectancy at age 65 was 20.5 years for females, unchanged from 2013, and 18.0 years for males, a 0.1-year increase from 2013. The difference in life expectancy at age 65 between females and males decreased 0.1 year, to 2.5 years in 2014 from 2.6 years in 2013.
Source: CDC