According to new research conducted at the University of Surrey in the UK, Facebook is linked to the perception of poor health among its users. UPI reports that when Facebook users compare themselves to other users on the site, they thought that they had more symptoms of physical ailments like sleep problems and weight change. One of the study's lead researchers pointed out, "An entity like Facebook, with 2.27 billion active monthly users, has never existed before. The long term effect it has on individuals is unknown, but it is clear that comparison with others is associated with perceptions of ill-health." The study also found that female users and people who suffer from anxiety and depression had even stronger perceptions of physical symptoms of ailments.

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