top of page
Writer's pictureJason Galdo

What Does Trauma do to the Brain


what does trauma do to the brain

Trauma can have a lasting impact on the brain, affecting how we think, feel, and even how we act. When we experience trauma, it doesn’t just disappear once the event is over. It leaves traces in our brain that can influence us long after. In this blog, we'll explore what trauma does to the brain in a way that's easy to understand.

The Brain and Trauma: Key Areas Affected

Our brain is a complex organ with many parts, each playing a role in how we process and respond to events. When trauma happens, certain parts of the brain are affected more than others. Three key areas that are especially impacted by trauma are the amygdala, the hippocampus, and the prefrontal cortex.

  1. Amygdala: The Brain's Alarm System

    • The amygdala is a small, almond-shaped area in the brain that acts like an alarm system. It helps us process emotions and detect threats. When something traumatic happens, the amygdala becomes highly active. It may even stay on high alert long after the trauma, which can make us feel anxious or fearful even when there is no real danger.

    • For people who have experienced trauma, the amygdala can become overactive, making it hard to relax or feel safe. Everyday events can seem scary because the brain is always on guard, expecting something bad to happen.

  2. Hippocampus: Memory and Learning

    • The hippocampus is responsible for storing memories and helping us learn. Trauma can make it difficult for the hippocampus to work properly. Sometimes, it can shrink or become less active, which affects our ability to form new memories or recall old ones.

    • Trauma can cause memories to feel confusing or disorganized. You might have flashbacks or experience memories of the traumatic event as if it’s happening in the present. The brain struggles to tell the difference between the past and the present because the hippocampus isn’t functioning normally.

  3. Prefrontal Cortex: Decision Making and Self-Control

    • The prefrontal cortex, located at the front of the brain, helps us make decisions, control our emotions, and think things through. Trauma can reduce its ability to function properly. This part of the brain might not be as active after trauma, making it harder to focus, control impulses, or make rational decisions.

    • When the prefrontal cortex isn’t working as it should, people may feel like they’re always in “survival mode.” It’s difficult to think clearly or process what’s happening because the brain is too focused on staying safe.

How Trauma Changes the Brain Over Time

Trauma can lead to changes in the brain that last for years. These changes can affect everything from how we feel to how we interact with others. For some people, trauma might lead to conditions like post-traumatic stress disorder (PTSD), depression, or anxiety. Others might struggle with relationships, experience mood swings, or have difficulty controlling their emotions.

When the brain experiences trauma, it starts to rewire itself to protect against future harm. This is why some people become very sensitive to certain sounds, sights, or situations that remind them of the trauma. The brain wants to avoid anything that could cause more pain, so it creates strong reactions to these triggers.

Can the Brain Heal After Trauma?

The good news is that the brain has the ability to heal. This process is called neuroplasticity, which means the brain can form new connections and pathways to adapt and recover. With the right support, people who have experienced trauma can retrain their brain to respond differently to triggers.

  • Therapies and Support: Therapies like cognitive behavioral therapy (CBT) and eye movement desensitization and reprocessing (EMDR) can help. These treatments teach the brain new ways to process and cope with trauma. Over time, they can help reduce the overactivity in the amygdala and improve the functioning of the hippocampus and prefrontal cortex.

  • Self-Care: Practicing mindfulness, engaging in physical activities, and building a strong support system can also aid recovery. When the body feels safe and calm, it helps the brain start to heal.

  • Professional Help: Working with a therapist who specializes in trauma can make a big difference. They can offer guidance, teach coping strategies, and provide tools that make it easier to manage symptoms.


Trauma has a powerful effect on the brain, but understanding these effects can be the first step toward healing. By learning about what trauma does to the brain, we can begin to see why we feel the way we do and find ways to support recovery. If you or someone you know has experienced trauma, remember that there are resources and treatments available. The brain is resilient, and with time and the right support, it can heal.


If you or a loved one are struggling with mental health issues, please give us a call today at 833-479-0797.

1 view0 comments

Comments


bottom of page