From JAMA Network:
Does an association exist between life purpose and all-cause or cause-specific mortality among people older than 50 years participating in the US Health and Retirement Study?
This cohort study of 6985 adults showed that life purpose was significantly associated with all-cause mortality.
Life purpose is a modifiable risk factor and as such the role of interventions to improve life purpose should be evaluated for health outcomes, including mortality.
Eating right and exercise also improve longevity.
Steve Parker, M.D.