USA: „Several studies have found that adolescents and young adults who spend more time on digital media are lower in well-being. For example, girls spending 5 or more hours a day on social media are three times more likely to be depressed than non-users, and heavy internet users (vs. light users) are twice as likely to be unhappy. Sleeping, face-to-face social interaction, and attending religious services – less frequent activities among iGen teens compared to previous generations – are instead linked to more happiness.“
Univ.-Prof. Dr. John F. Helliwell u.a., World Happiness Report 2019 (2019), S. 91.