Born biologically a girl, 15 year old Leo is one of the first children in Britain to be prescribed a new treatment – hormone blockers – to help him achieve what he feels is his natural gender identity of becoming a man.

As he turns 16, we follow Leo as he faces big changes and life-changing decisions.

If you would like information or support about the topics covered in this documentary, there are organisations in the UK that can help. More information can be found at http://www.bbc.co.uk/programmes/artic...

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