Right now there are over 2 million people imprisoned across the United States, that represents a 500% increase over the last 40 years, and despite making up only 5% of the world's population, America accounts for more than 20% of the world's incarcerations. With prisons across the country, filling up and with most incarcerated individuals suffering from mental health conditions, many of them serious, understanding the impact of those illnesses, both inside and outside the prison walls, is increasingly important.