By Daily Mail Reporter
Published: 01:57 BST, 14 August 2019 | Updated: 03:29 BST, 14 August 2019
Social media firms must hand over data on how children use the internet to help vital research, scientists say.
Tech giants have also been urged to help fund studies that examine the consequences of social media use.
Research looking at links between internet use and mental health is held back by a lack of accurate data showing which websites children use and how long they spend online.