Instagram está para o fim da lista. YouTube no topo:
http://time.com/4793331/instagram-social-media-mental-health/
Citando:
"Previous studies have suggested that young people who spend more than two hours a day on social networking sites are more likely to report psychological distress. “Seeing friends constantly on holiday or enjoying nights out can make young people feel like they are missing out while others enjoy life,” the #StatusOfMind report states. “These feelings can promote a ‘compare and despair’ attitude.”"
