Purpose tracks with a longer life, while the Blue Zones story is less certain

Key takeaways

• In a Japanese study of 43,391 adults, people who said they lacked ikigai, a sense that life is worth living, were about 1.5 times as likely to die over seven years.
• Among 6,985 Americans over 50, those with the weakest sense of purpose had about 2.4 times the risk of dying over four years, even after accounting for smoking, exercise and illness.
• A 2025 study of 13,765 adults found that people with the most purpose had about a 28% lower risk of developing memory and thinking problems.
• These studies show a link, not proof, and no trial has tested whether building purpose adds years to your life.
• The Blue Zones hot spots are disputed, with preprints questioning their birth records and defenders citing checked ages, so treat them as a story worth hearing, not proof that any one habit extends life.

In the fall of 1994, a health survey went out to about 55,000 insured adults aged 40 to 79 in Ohsaki, a district in Miyagi Prefecture in northern Japan². Nearly all of them filled it out. Most questions covered smoking, drinking, walking, sleep and past illnesses.

One question was different. It asked whether the person lived with ikigai, a Japanese word the researchers translated as a sense of life worth living¹. People could answer yes, not sure, or no².

The Ohsaki Study team followed 43,391 of those adults for seven years, and 3,048 died¹. People who had answered no were about 50% more likely to die than people who answered yes, even after the team accounted for age, health, stress, pain, smoking and walking¹².

Studies in the U.S. have since found the same pattern. Purpose keeps predicting who lives longer and who keeps a sharp mind.

For readers who value prevention and self-reliance, that is welcome news, since purpose costs nothing. But the research has limits that popular versions skip, and the most famous longevity story, the Blue Zones, faces a hard fight over its birth records.

Purpose has a research definition, and it’s smaller than a life mission

When scientists measure purpose, they don’t ask you to name your destiny. They ask how much you agree with plain statements about goals and direction.

A common tool is a set of seven statements from the Ryff scales of psychological well-being. People rate each one on a scale from 1 to 6, and higher scores mean more purpose³⁷.

Researchers at Rush University Medical Center in Chicago describe purpose as drawing meaning from what you go through and acting with clear intent⁶. In plain words, it’s the sense that your days are pointed somewhere. That can come from grandchildren, a garden, a congregation, a job or a cause.

The Ohsaki study asked just one question about ikigai¹². You may have seen ikigai drawn online as four overlapping circles: what you love, what you’re good at, what the world needs and what you can be paid for. That chart was not what the researchers tested.

Large studies keep linking purpose to a longer life

In 2019, University of Michigan researchers published one of the clearest American tests in JAMA Network Open³. Using the Health and Retirement Study, a long-running national survey of older Americans, they followed 6,985 adults over 50 from 2006 to 2010. During that time, 776 of them died.

People in the lowest purpose group had about 2.4 times the risk of dying, compared with people in the highest group³. That figure already accounts for age, sex, education, race, marital status, smoking, exercise, alcohol, weight, chronic disease and other psychological measures. For deaths from heart, blood vessel and blood conditions, the lowest group had about 2.7 times the risk.

A 2014 study in Psychological Science used a different national sample, Midlife in the United States, or MIDUS⁴. Patrick Hill and Nicholas Turiano followed participants for 14 years. People with more purpose lived longer, even after the authors accounted for other measures of emotional well-being. The link did not seem to depend on how old participants were.

The Japanese data told a similar story. People without ikigai were about 1.6 times as likely to die of cardiovascular disease and about 1.9 times as likely to die of external causes, a group that includes accidents and suicide¹².

Cancer was the exception. Neither the Michigan study nor the Ohsaki study found a clear link between purpose and cancer deaths¹³. That pattern is a clue. Purpose seems tied most closely to heart and blood vessel health, not to every disease.

A strong sense of purpose also tracks with a sharper aging brain

The Rush Memory and Aging Project has followed older adults in the Chicago area since 1997⁶. In 2010, Patricia Boyle and her colleagues reported on 951 participants who had no dementia at the start⁵.

Over up to seven years, 155 of them developed Alzheimer’s disease⁵. People with a high purpose score, at the 90th percentile, were about 2.4 times as likely to stay free of Alzheimer’s as people with a low score, at the 10th percentile.

The link held after the team accounted for depression symptoms, social network size, chronic illness and a personality trait tied to worry⁵. People with more purpose were also less likely to develop mild cognitive impairment, an early stage of memory and thinking trouble, and their thinking declined more slowly.

In 2012, the Rush team went further⁶. They studied 246 participants who had died and had brain autopsies. People who had reported more purpose in life had done better on thinking tests, even when their brains held plaques and tangles, the protein buildup linked to Alzheimer’s.

Purpose didn’t seem to stop the damage. It seemed to help the brain keep working in spite of it⁶.

A 2025 study from UC Davis Health tested the idea at a much larger scale⁷. Nicholas Howard and colleagues followed 13,765 adults aged 45 and older whose thinking was normal at the start. Over up to 15 years, 1,820 developed cognitive impairment, meaning mild cognitive impairment or dementia.

Those in the highest third for purpose had about a 28% lower risk than those in the lowest third, after the team accounted for age, sex, education, ethnicity and depression⁷. A separate check in people with genetic data also accounted for APOE4, a gene that raises Alzheimer’s risk, and the link still held.

The authors were candid about size. Over about eight years, people with the most purpose developed problems about 1.4 months later on average, which they called a modest delay⁷.

The link also wasn’t clear for everyone. It was statistically significant for Black and white participants but not for Hispanic participants⁷. The authors said the study had too few Hispanic participants to detect an effect reliably, so larger studies are needed.

A link is not proof, and the researchers say so

Every study above is observational, meaning researchers watched what happened to people rather than assigning purpose to some and not others. Such studies can show a link, but they can’t prove cause.

Three problems stand out.

Illness can drain purpose. Early disease, even before diagnosis, can make life feel smaller. The Michigan team checked by looking only at 1,774 people with no chronic conditions³. In that group, with just 79 deaths, the fully adjusted link was no longer statistically clear, though the authors noted the small group limited what they could detect.

The arrow points both ways. A 2025 study tracked purpose and 11 health markers in 11,390 older adults over 12 years⁸. Better health went with more purpose.

But within the same people, shifts in purpose predicted later changes in five health markers, while shifts in health predicted later purpose for only two⁸. That leans toward purpose doing some of the work, without settling it.

Other factors travel with purpose. People with strong purpose may differ in money, relationships, faith or personality. Studies adjust for many of these, but no study can adjust for everything.

There are good reasons to think purpose could matter. In a 2020 study of 13,770 older adults, Eric Kim and colleagues at Harvard looked at people who met health guidelines at the start⁹. Over eight years, those in the top quarter for purpose were 24% less likely to become inactive, 33% less likely to develop sleep problems and 22% less likely to reach an unhealthy weight than those in the bottom quarter. Purpose was not linked to heavy drinking.

So people with direction may simply take better care of themselves. What’s missing is a randomized controlled trial, where people are assigned by chance to a purpose-building program or not, with lifespan or dementia as the result. No such trial has been done.

The Blue Zones story, and the fight over birth records

The Blue Zones brand, founded by Dan Buettner, lists nine shared habits of long-lived communities, which it calls the “Power 9”¹². “Purpose” is the second item. The company’s website says Okinawans call it ikigai and people in Nicoya, Costa Rica, call it plan de vida.

The same page claims that knowing your purpose is worth up to seven years of extra life expectancy¹². It cites no study for that number, and none of the research above produced it.

The bigger challenge is to the hot spots themselves. Saul Justin Newman, a demographer at the University of Oxford, posted a preprint, a paper shared publicly before peer review¹³. He reported that American records of people aged 110 and older fell by 69% to 82% as states began issuing birth certificates.

Newman also found that only 18% of carefully checked people aged 110 and older had a birth certificate, and their birthdays clustered on dates divisible by five¹³. He called that a sign of error and fraud. In 2024, the work earned him an Ig Nobel Prize in demography¹⁴.

Defenders of the Blue Zones data push back hard. In a 2025 paper in The Gerontologist, Steven Austad of the University of Alabama at Birmingham and Giovanni Pes of the University of Sassari agreed that most self-reported claims of extreme age are false¹⁵. But they said Blue Zone ages were checked against civil, church and family records, and doubtful cases were thrown out.

In the Sardinian villages they studied, 0.51% of people born from 1880 to 1900 reached 100, about five times the European rate¹⁵. In a 2005 sample of 52 Okinawan centenarians, 49 had records that matched the ages they reported.

Austad and Pes also conceded a key point: the hot spots fade¹⁵. Okinawa no longer meets Blue Zone criteria, and the Nicoya zone had shrunk to about a quarter of its original size by 2010.

The debate isn’t settled. Newman’s challenges have appeared as preprints, and the 2025 defense lists them that way¹³¹⁵. Neither side has had the final word. And even if every record is right, a Blue Zone can’t tell you which habit made the difference: diet, walking, family, faith, genes or purpose.

What the evidence supports, rated on a four-level scale

Claim	Evidence level	What the research shows
People with more purpose tend to live longer	Strong evidence	Consistent links in large U.S. and Japanese studies; observational, so cause unproven134
More purpose is linked to fewer memory and thinking problems with age	Promising but early	Links in two U.S. cohorts, a modest delay, and an unclear result in Hispanic adults; no trials567
More purpose is linked to fewer cancer deaths	Evidence says no	No clear link in the U.S. or Japanese studies13
Building purpose will add years to your life	Not enough evidence	No randomized trial has measured lifespan38
A structured volunteer program raises your sense of contributing	Promising but early	One randomized trial in older adults11
Regular volunteering is linked to a lower risk of dying	Promising but early	Observational data from older Americans10
Blue Zones prove that purpose adds up to seven years	Not enough evidence	No study cited; age records disputed121315

How to build purpose, and how much effort the evidence points to

The research offers one hopeful fact: purpose isn’t fixed. In the 2025 study, people’s purpose rose and fell over time, and those shifts predicted later health⁸. The 2014 MIDUS study found the link across adulthood, not just at one age⁴.

One well-studied way to build purpose is service with other people. Harvard researchers found that older adults who volunteered at least 100 hours a year, about two hours a week, had a lower risk of dying and were more physically active¹⁰.

The strongest design came from Baltimore. In the Experience Corps trial, older adults were assigned by chance to volunteer in elementary schools or to a comparison group¹¹. After two years, volunteers reported a greater desire to care for the next generation, which psychologists call generativity. They also felt better about what they had already contributed.

Use this four-week routine to test what works for you.

1. Week 1, notice. Each evening, write one line about a moment that felt useful or absorbing. Don’t judge it.
2. Week 2, name your roles. List the people, places and projects that count on you. Circle the ones that give you energy.
3. Week 3, commit. Choose one regular role that involves other people, about two hours a week. That matches the level tied to benefits in the Harvard data¹⁰.
4. Week 4, review. Ask yourself whether the week had more direction. If not, adjust the role rather than quitting the experiment.

Where purpose often comes from	A small first step	What the research says
Caring for younger people	Read with children through a school or library program	Tested in the Experience Corps trial11
Regular service	Take a standing weekly shift at a food bank, clinic or congregation	Linked to lower death risk at about 100 hours a year10
Growing, making or teaching	Keep a shared garden plot or teach a skill you know	No direct trials; fits the general purpose research
Faith and tradition	Take on a regular role in your community’s rituals or care team	No direct trials on purpose; often a source of meaning
Learning toward a goal	Take a class that ends with a finished project	No direct trials; supports direction and goals

When a loss of purpose needs more than a new hobby

Feeling adrift after a retirement, a move or a loss is common, and a new role may help. But feeling empty or hopeless most days for weeks, or losing interest in things you used to enjoy, can be signs of depression. Depression is treatable, so talk with a clinician rather than trying to volunteer your way out of it.

Because early illness can sap purpose³⁸, a sudden loss of interest in life in an older relative is worth raising with their doctor.

If you or someone you know is thinking about suicide or is in crisis, call or text 988, the Suicide & Crisis Lifeline.

Questions readers ask

The bottom line

Purpose is a consistent predictor of a long life in large studies from the U.S. and Japan, and a promising one for a sharp mind. The link holds after researchers account for smoking, exercise and illness, and it may work partly through everyday habits like staying active and sleeping well.

Still, a link isn’t proof, the dementia delay was modest, and the Blue Zones claim of seven extra years cites no study. The takeaway is simple: purpose is free, safe and worth building for its own sake. If it also adds healthy years, that’s a gift the research hints at but hasn’t yet confirmed.

Keep exploring: wellness communities, walking clubs and meditation groups.

Related reading

• People come to wellness groups for answers and stay for belonging
• Walking clubs work, and you need fewer steps than you were told
• What meditation groups can do, and what they can stir up
• Most health products aren’t scams, but many just haven’t been proven

Sources

1. Sone T, Nakaya N, Ohmori K, et al. “Sense of Life Worth Living (Ikigai) and Mortality in Japan: Ohsaki Study.” Psychosomatic Medicine, 2008 (abstract via Fujita Health University research portal). pure.fujita-hu.ac.jp
2. Tohoku University Graduate School of Medicine, Division of Epidemiology. “Ikigai and mortality: Ohsaki Study” (Japanese-language publication summary). Tohoku University, 2008. pbhealth.med.tohoku.ac.jp
3. Alimujiang A, Wiensch A, Boss J, et al. “Association Between Life Purpose and Mortality Among US Adults Older Than 50 Years.” JAMA Network Open, 2019. pubmed.ncbi.nlm.nih.gov
4. Hill PL, Turiano NA. “Purpose in Life as a Predictor of Mortality Across Adulthood.” Psychological Science, 2014. pubmed.ncbi.nlm.nih.gov
5. Boyle PA, Buchman AS, Barnes LL, Bennett DA. “Effect of a Purpose in Life on Risk of Incident Alzheimer Disease and Mild Cognitive Impairment in Community-Dwelling Older Persons.” Archives of General Psychiatry, 2010. pubmed.ncbi.nlm.nih.gov
6. Rush University Medical Center. “Greater purpose in life may protect against harmful changes in the brain associated with Alzheimer’s disease.” News release via ScienceDaily, May 7, 2012. sciencedaily.com
7. Howard NC, Gerasimov ES, Wingo TS, Wingo AP. “Life Purpose Lowers Risk for Cognitive Impairment in a United States Population-Based Cohort.” American Journal of Geriatric Psychiatry, 2025. doi.org
8. Chereches F, Gudmundsdottir G, Olaru G. “Linking Sense of Purpose and Multiple Markers of Health in Older Adulthood: A Bidirectional Approach.” European Journal of Personality, 2025 (Health and Retirement Study bibliography). doi.org
9. Kim ES, Shiba K, Boehm JK, Kubzansky LD. “Sense of Purpose in Life and Five Health Behaviors in Older Adults.” Preventive Medicine, 2020 (Health and Retirement Study bibliography). pubmed.ncbi.nlm.nih.gov
10. Harvard T.H. Chan School of Public Health, Department of Social and Behavioral Sciences. Summary of Kim ES et al., volunteering and health in older adults, American Journal of Preventive Medicine, 2020. hsph.harvard.edu
11. USC Leonard Davis School of Gerontology. News release on Gruenewald TL et al., “The Baltimore Experience Corps Trial: Enhancing Generativity via Intergenerational Activity Engagement in Later Life,” Journals of Gerontology Series B, 2015. gero.usc.edu
12. Blue Zones (company website). “Power 9.” Accessed October 2026 (cited to show the company’s claims). bluezones.com
13. Newman SJ. “Supercentenarian and Remarkable Age Records Exhibit Patterns Indicative of Clerical Errors and Pension Fraud.” bioRxiv preprint, version 3, March 2024. biorxiv.org
14. Improbable Research. “Winners of the Ig Nobel Prize.” Accessed October 2026. improbable.com
15. Austad SN, Pes GM. “The Validity of Blue Zones Demography: A Response to Critiques.” The Gerontologist, 2025. pmc.ncbi.nlm.nih.gov