The Connection Between Trauma and Addiction: What the Research Shows

A large body of research shows a strong connection between trauma and addiction. Many individuals who struggle with substance use have experienced overwhelming events that exceeded their ability to cope at the time.

Trauma affects the nervous system. When the body remains in a state of chronic threat, substances can become a way to regulate emotions, numb pain, or create temporary relief. From this perspective, addiction is not about escape, it is about survival.

The ACEs study demonstrated a dose-response relationship between early adversity and later substance use. The more adversity someone experienced, the higher their risk. This doesn’t mean trauma guarantees addiction, but it does increase vulnerability.

When trauma is not addressed in treatment, relapse risk increases. Substance use may decrease temporarily, but the underlying nervous system dysregulation remains.

Trauma-informed addiction treatment focuses on:

• Safety and trust

• Choice and collaboration

• Emotional regulation skills

• Understanding substance use as adaptive, not defective

Approaches may include grounding strategies, somatic awareness, and gradual exposure to emotions that once felt intolerable.

Healing does not require reliving trauma. It requires learning new ways to feel safe in the body and connected to others.