Final answer:
Individuals recovering from addiction should remain in treatment for at least 3 months, as this duration increases the likelihood of sustained sobriety.
Step-by-step explanation:
Research conducted by the National Institute on Drug Abuse indicates that people recovering from addiction to drugs or alcohol generally need to stay in treatment for at least 3 months. Longer durations of treatment are usually associated with better outcomes and a greater probability of sustained sobriety. Treatment duration can vary based on the individual, the severity of the addiction, and other factors, but the minimum recommended time is 3 months to significantly improve the chances of recovery.