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Study: Happiness improves health and lengthens life
Date:3/1/2011

CHAMPAIGN, lll. A review of more than 160 studies of human and animal subjects has found "clear and compelling evidence" that all else being equal happy people tend to live longer and experience better health than their unhappy peers.

The study, in the journal Applied Psychology: Health and Well-Being, is the most comprehensive review so far of the evidence linking happiness to health outcomes. Its lead author, University of Illinois professor emeritus of psychology Ed Diener, who also is a senior scientist for the Gallup Organization, of Princeton, N.J., analyzed long-term studies of human subjects, experimental human and animal trials, and studies that evaluate the health status of people stressed by natural events.

"We reviewed eight different types of studies," Diener said. "And the general conclusion from each type of study is that your subjective well-being that is, feeling positive about your life, not stressed out, not depressed contributes to both longevity and better health among healthy populations."

A study that followed nearly 5,000 university students for more than 40 years, for example, found that those who were most pessimistic as students tended to die younger than their peers. An even longer-term study that followed 180 Catholic nuns from early adulthood to old age found that those who wrote positive autobiographies in their early 20s tended to outlive those who wrote more negative accounts of their young lives.

There were a few exceptions, but most of the long-term studies the researchers reviewed found that anxiety, depression, a lack of enjoyment of daily activities and pessimism all are associated with higher rates of disease and a shorter lifespan.

Animal studies also demonstrate a strong link between stress and poor health. Experiments in which animals receive the same care but differ in their stress levels (as a
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Contact: Diana Yates
diya@illinois.edu
217-333-5802
University of Illinois at Urbana-Champaign
Source:Eurekalert  

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