The vast majority of U.S. teens have access to a smartphone and at least one social media account, and recent headlines seem to confirm parents’ worst fears about the effects of all that time spent online. But psychologists’ research suggests that there are nuanced answers to the question of how social media affects teens’ mental health and well-being. Linda Charmaraman, PhD, director of the Youth, Media and Wellbeing Research Lab at the Wellesley Centers for Women, discusses how teens use social media today, its impact on their mental health, and what parents, educators and others can do to maximize its benefits and minimize its potential harms.