Robert Hummer and Elaine Hernandez contend a positive correlation between educational status and life expectancy. Higher educational status, as such, tends to correlate with greater longevity.
The Population Reference Bureau is linked below.
PRB: Education and Life Expectancy
"For example, remaining life expectancy at age 25—an important overall indicator of adult population health—is about a decade shorter for people who do not have a high school degree compared with those who have completed college."
---Robert A. Hummer and Elaine M. Hernandez, Population Reference Bureau