This study crunches the numbers to show that being socially connected has an effect on life expectancy comparable to that of exercise. Why this correlation exists is still up for debate, but it is worth considering that skill at networking and possessing a large social network enable success in other aspects of life: "These findings indicate that the influence of social relationships on the risk of death are comparable with well-established risk factors for mortality such as smoking and alcohol consumption and exceed the influence of other risk factors such as physical inactivity and obesity. Furthermore, the overall effect of social relationships on mortality reported in this meta-analysis might be an underestimate, because many of the studies used simple single-item measures of social isolation rather than a complex measurement. Although further research is needed to determine exactly how social relationships can be used to reduce mortality risk, physicians, health professionals, educators, and the media should now acknowledge that social relationships influence the health outcomes of adults and should take social relationships as seriously as other risk factors that affect mortality, the researchers conclude."

View the Article Under Discussion: http://dx.doi.org/10.1371/journal.pmed.1?000316

Read More Longevity Meme Commentary: http://www.longevitymeme.org/news/