Your Brain on Anxiety
Understanding Anxiety: Your Built-In Protector
Anxiety is a normal part of life and can be beneficial. It acts as a protective mechanism, helping us stay safe and focused on important tasks, such as performing well on tests or meeting deadlines. However, when helpful anxiety turns into an anxiety disorder, it's not just the anxious thoughts themselves that are the issue. The problem arises when these thoughts become stuck, interfering with your daily life and well-being.
If you're feeling overwhelmed by anxiety, understanding a simplified version of what happens in your brain can provide clarity and help you change your relationship with your symptoms.
Think of Your Brain as a Smoke Detector
Think of your brain as having a built-in safety mechanism, similar to a smoke detector in your home. The smoke detector's job is to alert you to danger when it detects smoke, ensuring your safety. Sometimes, though, it goes off unnecessarily, like when you burn toast. You don’t call 911 for burnt toast; instead, you recognize what’s happening, endure the noise, and solve the problem before moving on.
The Brain’s Response to Anxiety
Ever been hit with that rush when your boss hands you a major project or when you realize you're up next to present in class, and suddenly your heart's pounding and your stomach feels empty and panicked? Hello, anxiety! Let's unpack this process to understand how our brains respond to these situations and the resulting anxiety, using the brain structures and processes illustrated above as our guide. When we encounter such stressors, our brain follows a specific sequence of processing. It kicks off in the spinal cord, makes its way up to the thalamus (our brain's relay station), and lands in the amygdala—a tiny, almond-shaped structure in the brain's core that reacts to memories of fear and potential danger cues. This small structure can create significant problems for those suffering from anxiety.
The amygdala is like an overzealous smoke detector. It can exaggerate threats or even misinterpret harmless situations as dangerous. This triggers a cascade of chemicals via the hypothalamus, including adrenaline (for fight or flight) and cortisol (a stress hormone). These chemicals prepare your body to respond to danger, making you feel on edge and uncomfortable. This flood of chemicals can make you feel that the thoughts you’re having are more meaningful than they actually are. It's important to note that while these feelings are unpleasant, they are not dangerous.
The hippocampus, located near the amygdala, plays a crucial role in how we process fear. It helps encode threatening events into memories and contextualizes fear by recognizing when certain stimuli are actually safe. For instance, if you hear a loud noise while watching a fireworks display, the hippocampus helps you understand that this noise is not a threat. However, hearing the same loud noise in a quiet environment might trigger a stronger fear response, as the hippocampus interprets it differently.
The prefrontal cortex (PFC) is the brain's decision-maker. It takes longer to process information and determine if the threat is real. Once the PFC has caught up, it determines whether or not there is any real danger. If we decide there is no danger at this point, then the body's stress response can subside in about 15 minutes. However, if the PFC reacts immediately to the amygdala's false alarms, we reinforce this overreaction, leading to prolonged anxiety.
Retraining Your Brain
When you engage in certain behaviors or avoid confronting your anxiety, you're essentially reinforcing the circuitry in your brain, affirming to yourself that your amygdala's alarm is justified. This reinforcement can intensify your anxiety in the future. Imagine it like raising a baby pet lion: if you consistently feed it when it growls, what do you think will happen when it grows bigger?
Managing anxiety involves retraining your brain to respond appropriately to stressors. When your amygdala sends a false alarm, acknowledge it but try not to react. By doing this, you teach your brain that not every alarm needs an immediate response. Over time, your amygdala learns to provide more accurate information, reducing unnecessary anxiety. When you react to your anxiety by trying to feel better immediately, you reinforce the amygdala’s false alarms, amplifying your anxiety in the future.
By understanding and gently retraining your brain, you can reduce the frequency and intensity of your anxiety, leading to a more balanced and fulfilling life.