The California legislation comes amid growing concerns about the impact of cellphones and social media on adolescents’ mental health.

California Gov. Gavin Newsom on Friday signed a bill that aims to reduce social media use among children, the latest state effort to regulate the medium over increasing concerns that heavy use is damaging to young people.

New York Gov. Kathy Hochul signed two bills in June restricting digital platforms' algorithms and use of children's data. Social media platforms will be required to display content chronologically by default for kids under 18. And websites would be banned from collecting or sharing the personal data of users under 18 without consent.