In the third part of our 'Fixers' campaign - giving young people a voice to champion the issues that really matter to them - we meet Jenna Gidding, who's 16 and from Flintshire.
We hear that sexually transmitted diseases are affecting young people more than older groups, with two-thirds of all diagnoses of women and half of men amongst the under twenty-fives.
A Merthyr Tydfil teenager who was told to remove a lip ring for work says it's time to challenge the 'stigma' of tattoos and piercings.
Mental health problems can take many forms and can affect anyone at any time. Some of the possible early signs and where to find help.