Alice Hendy lost her brother Josh, after he took his own life at just 21, following a search for harmful content online.
Now she has created an online intervention tool which she hopes will save lives.
Anyone feeling emotionally distressed or suicidal can call Samaritans for help on 116 123 or email jo@samaritans.org or talk to CALM on 0800 58 58 58 or via webchat on thecalmzone.net.
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