A recent case in the news, finds a mother grieving her loss. Her son struggled with drug addiction for some time and she thought that when he was arrested and in jail he would get him the help he needed. Unfortunately, her son died while in custody and she is waiting to know why.
Jails and detention centers hold people who are waiting for release on bail or trial, and those who are serving a prison sentence. Federal prisons hold those who have been sentenced to length of custody over 2 years. Unfortunately, jails and detention centers do not have a lot of resources, so prisoners spend a lot of time in their cells, watching television, doing next to nothing. In a few jails, there may be Alcoholics Anonymous, or chapel, but no programs for education, or skills training.
Jails do not have the ability to monitor people who are addicted or who have mental health issues, sometimes there is a special wing, however, there is minimum medical staff, and often prisoners have to make several requests before they are seen. The courts and jails are unable to force people into giving up their addictions and have treatment.
Resources like the Center for Addiction and Mental Health (CAMH) http://www.camh.ca/ and your family doctor have better resources if you or a loved one is facing addiction or mental health issues.