A study by University of Essex and University College London found that teens who spend more hours daily on social media have a greater risk for depression, and the connection appears to be particularly pronounced for girls.
The team looked at data from over 10,000 14-year-olds taking part in the UK Millennial Cohort Study. Participants filled out questionnaires about their social media use and their mental health. The more a person used social media, the greater their likelihood for experiencing depression symptoms: 12% of light social media users and 38% of heavy social media users had depression symptoms. Three to five hours of social media a day was linked to a 26% increase in depression scores in girls, vs 21% in boys.