A study in the Journal of Adolescent Health evaluated survey data involving close to 75,000 eighth and tenth grade students and found that everyday social media use was not linked to depressive symptoms after accounting for the fact that those with frequent social media use already had worse mental health to begin with. "Daily social media use does not capture the diverse ways in which adolescents use social media, which may be both positive and negative depending on the social context," said senior author Katherine Keyes.