A Wall Street Journal investigation shows that Facebook's internal research found that its Instagram service is harmful for many young users, especially teenage girls, and can lead to anxiety, depression and risk of suicide. Yet in public, Facebook has consistently played down the app's negative effects on teens. Reporter Georgia Wells joins host Zoe Thomas to discuss the latest installment of the WSJ's investigative series "The Facebook Files." Learn more about your ad choices. Visit megaphone.fm/adchoices