Growing research indicates that one’s purpose—i.e., the extent to which someone perceives a sense of direction and goals in their life—may be linked to health-protective benefits such as better physical functioning and lower risks of cardiovascular disease or cognitive decline.
A new study found that people with higher levels of purpose may have a lower risk of death from any cause, and that this association is applicable across race/ethnicity and gender. The result suggests that this association is slightly stronger among women than it is among men, but there was no significant difference by race/ethnicity.
Led by a Boston University School of Public Health (BUSPH), the study has been published in the journal Preventive Medicine.
“Having a purpose in life has been known to improve many health outcomes on average,” says study lead author Dr. Koichiro Shiba, assistant professor of epidemiology at BUSPH. “In another study I led, we found that the effect of purpose on lowering all-cause mortality may differ by socioeconomic status. In this study, we extended the prior evidence and found that the beneficial effect of purpose persisted regardless of gender and race/ethnicity.”
For the study, Dr. Shiba and colleagues at Harvard T.H. Chan School of Public Health (Harvard Chan) utilized data from the Health and Retirement Study, a nationally representative study of US adults ages 50 and older. The team assessed self-reported sense of purpose among more than 13,000 people, based on the “purpose in life” of the Ryff Psychological Well-being Scales, a widely used tool that measures different aspects of well-being and happiness. The researchers also examined mortality risk over an eight-year period beginning between 2006-2008.
The results showed that people with the highest sense of purpose indicated the lowest risk of death (15.2 percent mortality risk), compared to people with the lowest sense of purpose (36.5 percent mortality risk).
The team also gathered data on additional factors that can influence health, such socioeconomic status, other demographic characteristics, baseline physical health, and depression, and found that an increase in these factors was also associated with increases in a higher sense of purpose.
Dr. Shiba speculates that the stronger observed purpose-mortality association in women may be attributable to gender difference in the use of healthcare services, “one of the postulated pathways linking purpose and health,” he says. “Evidence suggests men tend to underuse necessary healthcare services, due to social norm. However, future study investigating the mechanisms underlying the gender difference is warranted.”rvard Chan.
