Surgeon General Vivek Murthy, long a proponent of mental health awareness, has issued a warning that social media use is a main contributor to depression, anxiety and other problems in the nation's teenagers.

The report, released Tuesday, calls attention to growing concerns about the effects of social media use on children and adolescent's mental health. The advisory urges policymakers and the companies that make the social media platforms to share with parents the burden of managing children's and adolescents’ social media use.

Murthy calls youth mental health “the defining public health issue of our time,” urging policymakers to help ensure strong safety standards to help protect adolescents and teens from exposure to harmful content and excessive use. 

Up to 95% of teens between the ages of 13 and 17 say they use a social media platform, according to the report. About a third say they're scrolling, posting or otherwise engaged with social media "almost constantly."... Read More: NBC News