Volunteering

Volunteering, unpaid work for other people or a cause, is one of the habits most consistently linked with a longer life in older adults: regular volunteers die at noticeably lower rates in large observational studies. Much of that gap is explained by the extra social contact and better physical health that go with volunteering, and healthier people volunteer more in the first place. The few, small randomised trials suggest volunteering can raise a sense of purpose, not that it lengthens life.

If you want a role that builds purpose, regular volunteering is a sound choice: about two hours a week is the level most clearly linked with lower death risk in adults over 50. Pick something you will keep doing; volunteering under about 50 hours a year showed little association, and in two of the trials, gains showed up only in people who stuck with it.

Volunteers die at lower rates

In a meta-analysis of studies of adults aged 55 and over, volunteers had about 24% lower risk of death than non-volunteers after adjustment for other factors ^[1].

The amount seems to matter. In a U.S. study that followed about 13,000 adults over 50, volunteering at least 100 hours a year, about 2 hours a week, went with about 44% lower risk of death over the next 4 years and with better well-being later on, while volunteering under about 50 hours a year showed little association ^[2].

Why the true effect is probably smaller

These are observational studies, and the people who volunteer are not a random slice of the population. Healthier people volunteer more, so part of the gap is simply that they were already well. Separately, in the same U.S. cohort, much of the link with mortality was statistically explained by social factors that went with volunteering, such as more contact with friends and helping others, and by better physical health ^[3].

That makes volunteering look less like a treatment of its own and more like a way into other things linked with health: other people and a sense of being useful. Purpose and social connection run through most of the evidence on purpose in later life, and volunteering bundles both.

A signal in teenagers too

The same pattern shows up far earlier in life, in two samples of Black adolescents from low-income families (1,379 in all). In the first, measured once, more frequent volunteering went with a better score on a combined measure of metabolic syndrome, a cluster of heart and diabetes risk factors. In the second, followed into adulthood, those who had volunteered as teenagers had about half the odds of a diabetes diagnosis by age 29 ^[4].

In the first sample, a higher sense of purpose explained roughly a fifth to nearly half of the link between volunteering and a better metabolic score, while physical activity and depressive symptoms did not. Purpose was not measured in the group followed into adulthood, so the diabetes result could not be tested the same way. All of it is observational.

What the trials show: more purpose, health untested

Starting to volunteer is the closest direct test of whether purpose can be raised in healthy older adults, and the trials are few and small.

Australia. In a trial of 445 retirees, those who actually volunteered at least an hour a week for 6 months reported higher purpose a year later. That result comes only from comparing the people who stuck with their assigned group; the published summary reports no result for everyone randomised ^[5].
Hong Kong. In a trial of 198 adults aged 55 and over, an 8-week volunteering program raised meaning in life and well-being for 9 months, compared with both an active comparison activity and no program ^[6].
The whole field. A 2026 review counted only five volunteering trials, all at high risk of bias ^[7].

None of these trials has shown that taking up volunteering lengthens life.

Older volunteers in schools: mixed results

The Baltimore Experience Corps trial placed older volunteers in schools. Its results are mixed and mostly confined to subgroups.

It raised the volunteers' sense of being useful to the next generation ^[8].
Its benefit for the steadiness of thinking speed appeared only in people who attended most sessions, not in the standard analysis of everyone randomised ^[9].
Gains in brain volume were statistically significant only in men ^[10].
After 2 years, women in the program, but not men, walked about 1,500 more steps a day than controls, largely because women in the control group walked less over time ^[11].

The program also bundled social, mental and physical activity, so it cannot show which part did the work, or whether purpose itself mattered.

What to do

Make it regular. About 2 hours a week, or 100 hours a year, is the level most clearly linked with lower death risk; volunteering under about 50 hours a year showed little association.
Choose a role with people in it. More contact with others accounts for much of the link, so a role that puts you alongside people may be the better bet.
Pick something you will keep doing. In two of the trials, gains showed up only in people who stuck with it.
Plan it before a big role ends. Retirement, an empty nest and widowhood can each drain purpose, though the cost is not automatic; plan the next role before the current one ends. See Purpose for the other roles that build it.