The document discusses prison drug treatment programs and their effectiveness in reducing recidivism. It notes that over 50 federal prisons have residential drug abuse treatment programs with over 16,000 inmates participating. Studies have shown these programs reduce relapse, re-arrest rates, and drug/alcohol use post-release by 40-70% compared to untreated inmates. They work by addressing the cognitive and behavioral factors underlying criminal behavior and substance abuse. Officials now acknowledge the cost-effectiveness of such rehabilitation programs for reducing crime rates long-term.