Addiction, also called substance use disorder, is a brain disease that affects millions of people in the United States each year.(Source) It changes how the brain processes reward, stress, and self-control, which is why stopping on your own can feel so difficult.

According to the American Psychiatric Association, addiction is a complex condition marked by compulsive substance use despite harmful consequences.(Source) Even when someone clearly sees the damage to their health, relationships, work, or finances, they may feel unable to stop using without help.

Recent national survey data show that tens of millions of Americans meet criteria for a substance use disorder in a given year, and many also live with co‑occurring mental health conditions such as depression, anxiety, or PTSD.(Source) These overlapping challenges can make recovery more complicated—but with the right treatment plan, long‑term recovery is possible.

No matter how long it took for addiction to develop, recovery is an ongoing process that usually unfolds in stages. For many people, the journey includes:

• Medical detox to safely manage withdrawal
• Rehabilitation (rehab) to build coping skills and address the root causes of substance use
• Aftercare and ongoing support to protect recovery over time

When you start thinking about ending substance use and entering treatment, it is natural to ask: How long does recovery take? While rehab programs have specific time frames, recovery itself is best viewed as a lifelong process of growth and maintenance rather than something that is “finished” after a set number of days.