Professor Kinner said that while efforts were already being made to improve health and well-being of prisoners while they were incarcerated, not enough was being done to assist with the transition back into the community.
"What we're arguing is that these data strongly support the view that we need to do more to support people after they're released from prison," he said.
"We need to do more generally for people transitioning out of prison; we need to do more particularly for people with a history of mental disorder."
He said in order to reduce spending on the justice and health systems, governments need to get "tough on the causes of crime".
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