What does the justice system do to kids' health?

We know that people who spend time in prison are more likely to have both physical and mental health problems, but new data is showing that, for children, any contact with the criminal justice system means they’re more likely to die earlier and have health problems of every kind.
Is the system causing the harm, or are kids already at risk also more likely to be targeted by the system—and what would it take to change this trend?

To read in detail: https://www.abc.net.au/listen/programs/healthreport/0915-youth-justice-system/103497794