Brain scans show that damaged reward systems can return to nearly normal levels after fourteen months of sobriety.

When someone uses heavy stimulants like methamphetamine, it wipes out the brain's natural pleasure docks. But science shows our bodies can heal. Brain scans of people recovering from meth show that after just one month of staying clean, the brain is still very quiet and damaged. But by month fourteen, the brain's pleasure pathways look almost identical to a healthy brain that has never used drugs.