A longitudinal study27 that tracked volunteering and well-being over many years in thousands of people was able to show a causal effect: When a person increased volunteer work, all measures of happiness and well-being increased (on average) afterwards, for as long as the volunteer work was a part of the person’s life. The elderly benefit even more than do other adults, particularly when their volunteer work either involves direct person-to-person helping or is done through a religious organization. The benefits of volunteer work for the elderly are so large that they even show up in improved
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