READ MORE: Archie Battersbee dies after last-ditch effort to stop life support switch-off failsMum Hollie said outside the Royal London Hospital in Whitechapel, east London, this afternoon that Archie "fought right until the very end".She said: "In sadness, Archie passed at 12.15pm today."I would just like to say I am the proudest mum in the world.Archie had found unconscious with a ligature over his head by his mother on April 7.Although he was rushed to hospital he never regained consciousness.Hollie thinks the 12-year-old may have been taking part in the Blackout Challenge, a disturbing online trend that sees young people use various dangerous techniques to cause themselves to become unconscious.His mum told LBC about the dangerous challenge: "If you have to use Archie as the topic to address it, just please sit down with your children with regards to these online challenges."Once you look into it, they’re so frightening."[It’s] heartbreaking, because I think, if I’d known about these challenges I could have had that conversation with him even the day before."And I know that I would have been really firm with that conversation, and we wouldn’t be here now."Dr Nick Flynn explained to the Irish Examiner the effects of the blackout challenge.
He said: "What is actually going on in the brain is a lack of oxygen similar to when someone is drowning, choking, or having a cardiac arrest.Read more on dailystar.co.uk