For those suffering from mental health problems, the internet can be a door to getting help and finding a community, but it can also open a user to extremely damaging content that encourages self-harm. Adele Zeynep Walton is campaigning for a safer digital world after her sister Aimee took her own life in 2022, having spent time on a pro-suicide forum. Walton's book "Logging Off: The Human Cost of Our Digital World" draws attention to a growing, insidious phenomenon.