(WHAS11) -- Does facebook make you miserable? From political rants to vacation pictures that make you jealous is using the social media site really all fun?
A new study says one in three people surveyed felt worse after visiting Facebook and more dissatisified with their own lives.
German researchers believe that seeing pictures of friends' vacations, love lives and work success on Facebook can cause envy and trigger feelings of misery and loneliness.
The world's largest social network now has more than one billion users.
Researchers say they were surprised at how many people have a negative experience after leaving the site.