Across many studies of older adults, the people who volunteered their time were meaningfully less likely to die over the years that followed, and reported a stronger sense of purpose and better health while they lived.
One careful gathering of the evidence, a 2013 review in Psychology and Aging led by Morris Okun, pooled studies following tens of thousands of older adults and found that those who volunteered were roughly a quarter less likely to die during the follow-up. A later study, led by Eric Kim in 2020 and drawn from nearly thirteen thousand older Americans in the Health and Retirement Study, sharpened the picture: those who gave about a hundred hours a year, the equivalent of two hours a week, had a lower risk of dying and of losing their physical function, alongside a brighter sense of optimism and purpose.
Why service reaches the giver
To volunteer is to be needed, and being needed is its own kind of nourishment. Service folds together the things a good life runs on: a reason to rise in the morning, a web of people to belong to, a body kept moving, a mind kept engaged. It answers the quiet question of later life, whether one still matters, with a steady yes. The gift, it turns out, travels in two directions at once.
To be of use is among the oldest medicines there is.
Find the place that needs you
The dose is modest and within reach. About two hours a week, the studies suggest, is enough to enter the benefit: a shift at the library, a hand at the food bank, a morning reading to schoolchildren. The aim is to find work that feels like it matters and to show up for it. For an older adult, a place that expects them each week offers purpose, company, and movement woven into a single standing commitment.
These are observational studies, and the healthy and connected are the most able to volunteer in the first place, so the size of the gift is held with care. Service is no cure. What stands is a heartening and well-replicated finding: that giving time to others tracks, again and again, with a longer life and a sturdier sense of why it is worth living.