Social media isn't like cigarettes, and a warning label won't help much

• The US surgeon general is pushing for a warning label on social media about teen mental health risks. 
• A comparison to cigarette warnings is tempting, but social media might be more like explicit lyrics. 
• It's hard to see how a warning label could be as effective as government regulation.

US Surgeon General Vivek Murthy is recommending a warning label on social media sites cautioning that "social media is associated with significant mental health harms for adolescents."