A University of Copenhagen study suggests excessive use of social media can create feelings of envy.
It particularly warns about the negative impact of "lurking" on social media without connecting with anyone.
The study suggests taking a break from using social media.
The study of more than 1,000 participants, mostly women, says that "regular use of social networking such as Facebook can negatively affect your emotional well-being and satisfaction with life".
'Unrealistic social comparisons'